SJMF150-S JetFlow Silent SJMF-S - 150mm Dia EC Mixed Flow Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SJMF200-S JetFlow Silent SJMF-S - 200mm Dia EC Mixed Flow Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SJMF250-S JetFlow Silent SJMF-S - 250mm Dia EC Mixed Flow Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SJMF100 JetFlow SJMF - 100mm Dia EC Mixed Flow Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SJMF125 JetFlow SJMF - 125mm Dia EC Mixed Flow Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SJMF150 JetFlow SJMF - 150mm Dia EC Mixed Flow Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SJMF200 JetFlow SJMF - 200mm Dia EC Mixed Flow Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SJMF250 JetFlow SJMF - 250mm Dia EC Mixed Flow Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SJMF315 JetFlow SJMF - 315mm Dia EC Mixed Flow Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans GR-BL Gripple B-Lock Side Release Hanger / Clutcher support-suspension-systems gripple GR-WR Gripple B-lock Wire Rope support-suspension-systems gripple GRK2-2 Gripple Knock-in (M06) XP2 No2 x 2m (x10) support-suspension-systems gripple SSQU1-4-3HT Slim Qube SSQU1/4/3HT - High Temperature Fan - 315mm dia inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SSQU2-4-3HT Slim Qube SSQU2/4/3HT - High Temperature Fan- 500mm dia inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SSQU22-4-3HT Slim Qube SSQU22/4/3HT - High Temperature Fan - 400mm dia inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SSQU23-4-3HT Slim Qube SSQU23/4/3HT - High Temperature Fan - 500mm dia inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SSQU3-4-3HT Slim Qube SSQU3/4/3HT - High Temperature Fan - 560mm dia inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SSQU4-4-3HT Slim Qube SSQU4-4-3HT - High Temperature Fan - 710mm dia inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SSQU4-6-3HT Slim Qube SSQU4-6-3HT - 6 pole 3 phase - High Temperature Fan - 710mm dia inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SSQU4-4-3BHT Slim Qube SSQU4/4/3BHT - High Temperature Fan - 710mm dia (High Performance) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SQT125-1ECL SQT Quietflow Twin Fan - 125mm dia (SQT125-1ECL) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SQT150-1ECL SQT Quietflow Twin Fan - 150mm dia (SQT150-1ECL) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SQT200-1ECL SQT Quietflow Twin Fan - 200mm dia (SQT200-1ECL) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SQT250-1ECL SQT Quietflow Twin Fan - 250mm dia (SQT250-1ECL) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SQT315-1ECL SQT Quietflow Twin Fan - 315mm dia (SQT315-1ECL) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SQT400-1ECL SQT Quietflow Twin Fan - 400mm dia (SQT400-1ECL) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SQT500-1ECL SQT Quietflow Twin Fan - 500mm dia (SQT500-1ECL - Single Phase) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans SQT500-3ECL SQT Quietflow Twin Fan - 500mm dia (SQT500-3ECL - 3 Phase) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand elta-fans HFF-305 Unifoot 305 - H Frame Foot 305x305mm (for 40x40mm Channel) channel-systems channel-support-feet support-suspension-systems channel-support-feet-support-suspension-systems VM00 Doby VerroMax - 5m Flange (20mm, 30mm, 40mm) ductshop-manufacturing-components flange VM00C Doby VerroMax - Corner Pieces for Flange (20mm & 30mm) ductshop-manufacturing-components flange-corners VF00C Doby VerroFlange - Corner Pieces (20mm, 30mm, 40mm) ductshop-manufacturing-components flange-corners VF-DVS4 S4M Medium Pressure Verro Stiffener x 5m ductshop-manufacturing-components stiffener VF-S50C S4/S5 Verro Stiffener Corners 40mm ductshop-manufacturing-components stiffener PREMA180CP PREMA180 Ceiling Void Energy Recovery Unit heat-recovery elta-heat-recovery PREMA330 PREMA330 Ceiling Void Energy Recovery Unit heat-recovery elta-heat-recovery PREMA540 PREMA540 Ceiling Void Energy Recovery Unit heat-recovery elta-heat-recovery PREMA900 PREMA900 Ceiling Void Energy Recovery Unit heat-recovery elta-heat-recovery FM-150-1-000 Synthetic Filter Media 10mm thick - ISO Course 45% (G3) filtration synthetic-filter-media FM-220-1-000 Synthetic Filter Media 20mm thick - ISO Course 85% (G4) filtration synthetic-filter-media BDP-110 110 x 54mm Plastic Duct Balancing Damper (Metal) plastic-ducting-system balancing-dampers volume-control-dampers balancing-dampers-rectangular-plastic-duct BDP-204 204 x 60mm Plastic Duct Balancing Damper (Metal) plastic-ducting-system balancing-dampers volume-control-dampers balancing-dampers-rectangular-plastic-duct BDP-220 220 x 90mm Plastic Duct Balancing Damper (Metal) plastic-ducting-system balancing-dampers volume-control-dampers balancing-dampers-rectangular-plastic-duct C4A-150W 4 Way Aluminium Ceiling Diffuser (Louvre Faced) ventilation-grilles-diffusers-air-valves-plenums ceiling-diffusers MAVS-100 Circular Metal Supply Air Valve ventilation-grilles-diffusers-air-valves-plenums air-valves SWDCB-595AW Swirl Ceiling Diffuser ventilation-grilles-diffusers-air-valves-plenums ceiling-diffusers PDS DOMUS Plastic Duct Sealant plastic-ducting-system plastic-duct-sealants tapessealantsflashings plastic-duct-sealants-tapessealantsflashings VA-HR200WK HR200WK Single Room Vent-Axia Heat Recovery Unit (14120020) heat-recovery vent-axia-heat-recovery IDS-110 Intumescent Duct Sleeve (foil shell) - 110 x 54mm plastic-ducting-system intumescent-dampers-plastic-ducting-system fire-dampers-firesmoke-dampers intumescent-dampers-for-plastic-duct IDS-204 Intumescent Duct Sleeve (foil shell) - 204 x 60mm plastic-ducting-system intumescent-dampers-plastic-ducting-system fire-dampers-firesmoke-dampers intumescent-dampers-for-plastic-duct IDS-220 Intumescent Duct Sleeve (foil shell) - 220 x 90mm plastic-ducting-system intumescent-dampers-plastic-ducting-system fire-dampers-firesmoke-dampers intumescent-dampers-for-plastic-duct DFS-100 Intumescent Fire Sleeves (steel shell) for 100mm Ø Plastic Circular Duct plastic-ducting-system intumescent-dampers-plastic-ducting-system fire-dampers-firesmoke-dampers intumescent-dampers-for-plastic-duct DFS-110 Intumescent Fire Sleeves (steel shell) for 110 x 54mm Plastic Rectangular Duct plastic-ducting-system intumescent-dampers-plastic-ducting-system fire-dampers-firesmoke-dampers intumescent-dampers-for-plastic-duct DFS-125 Intumescent Fire Sleeves (steel shell) for 125mm Ø Plastic Circular Duct plastic-ducting-system intumescent-dampers-plastic-ducting-system fire-dampers-firesmoke-dampers intumescent-dampers-for-plastic-duct DFS-204 Intumescent Fire Sleeves (steel shell) for 204 x 60mm Plastic Rectangular Duct plastic-ducting-system intumescent-dampers-plastic-ducting-system fire-dampers-firesmoke-dampers intumescent-dampers-for-plastic-duct DFS-220 Intumescent Fire Sleeves (steel shell) for 220 x 90mm Plastic Rectangular Duct plastic-ducting-system intumescent-dampers-plastic-ducting-system fire-dampers-firesmoke-dampers intumescent-dampers-for-plastic-duct VA-LCSK-0 Lo-Carbon Sentinel Kinetic PLUS B (443028) - Vent-Axia heat-recovery vent-axia-heat-recovery AFL10-102 Non-Insulated Aluminium Flexible Ducting flexible-ducting airflex AFL11-102 Insulated Aluminium Flexible Duct flexible-ducting airflex ACFL11-102 Acoustic Aluminium Flexible Ducting flexible-ducting acoustic-flexible-ducting PU4-102 ClearFlex - Polyurethane Flexible Ducting flexible-ducting polyurethane-clear-flex COMBI-102 CombiFlex - PVC Coated Aluminium Flexible Ducting flexible-ducting combi-flex GFL-102 GlassFlex - PVC Coated Glass Fibre Flexible Ducting flexible-ducting glasflex SR-100/3 Semi-Rigid Aluminium Flexible Ducting (3m) flexible-ducting semi-rigid-flexible-ducting VA-TOTUS-MAXI Sentinel Totus 2 MAXI D-ERV MVHR Unit (TOTUS2MAXI) heat-recovery vent-axia-heat-recovery SST-220-1M Thermal Duct - 220x90mm x 1m plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 220x90mm-self-sealing-thermal-ducting SST-125-1M Verplas Thermal Duct - 125mm Ø x 1m plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 125mm-diameter-self-sealing-thermal-ducting SST-125-2M Thermal Duct - 125mm Ø x 2m plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 125mm-diameter-self-sealing-thermal-ducting SST-160-1M Thermal Duct - 160mm Ø x 1m plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 160mm-diameter-self-sealing-thermal-ducting SST-160-2M Thermal Duct - 160mm Ø x 2m plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 160mm-diameter-self-sealing-thermal-ducting SST-204-PL Thermal Duct - 204 x 60mm to 125mm Ø Rect-Round Elbow plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 204x60mm-self-sealing-thermal-ducting SST-204-1M Thermal Duct - 204x60mm x 1m plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 204x60mm-self-sealing-thermal-ducting SST-204-2M Thermal Duct - 204x60mm x 2m plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 204x60mm-self-sealing-thermal-ducting SST-220-PL Thermal Duct - 220 x 90mm to 125mm Ø Rect-Round Elbow plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 220x90mm-self-sealing-thermal-ducting SST-220-2M Thermal Duct - 220x90mm x 2m plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 220x90mm-self-sealing-thermal-ducting SST-125-45B Thermal Duct - 45° Bend - 125mm Ø plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 125mm-diameter-self-sealing-thermal-ducting SST-160-45B Thermal Duct - 45° Bend - 160mm Ø plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 160mm-diameter-self-sealing-thermal-ducting SST-204-45HB Thermal Duct - 45° Horizontal Bend - 204x60mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 204x60mm-self-sealing-thermal-ducting SST-220-45HB Thermal Duct - 45° Horizontal Bend - 220 x 90mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 220x90mm-self-sealing-thermal-ducting SST-204-45VB Thermal Duct - 45° Vertical Bend - 204x60mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 204x60mm-self-sealing-thermal-ducting SST-220-45VB Thermal Duct - 45° Vertical Bend - 220 x 90mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 220x90mm-self-sealing-thermal-ducting SST-160-90B Thermal Duct - 90° Bend - 160mm Ø plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 160mm-diameter-self-sealing-thermal-ducting SST-204-90HB Thermal Duct - 90° Horizontal Bend - 204x60mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 204x60mm-self-sealing-thermal-ducting SST-220-90HB Thermal Duct - 90° Horizontal Bend - 220 x 90mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 220x90mm-self-sealing-thermal-ducting SST-204-90VB Thermal Duct - 90° Vertical Bend - 204x60mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 204x60mm-self-sealing-thermal-ducting SST-220-90VB Thermal Duct - 90° Vertical Bend - 220 x 90mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 220x90mm-self-sealing-thermal-ducting SST-204-TP Thermal Duct - Horizontal Tee Piece - 204x60mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 204x60mm-self-sealing-thermal-ducting SST-220-TP Thermal Duct - Horizontal Tee Piece - 220 x 90mm plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 220x90mm-self-sealing-thermal-ducting SST-125-TP Thermal Duct - Tee Piece - 125mm Ø plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 125mm-diameter-self-sealing-thermal-ducting SST-160-TP Thermal Duct - Tee Piece - 160mm Ø plastic-ducting-system thermal-shells-thermal-duct insulated-ducting verplas-self-seal-thermal-duct 160mm-diameter-self-sealing-thermal-ducting VA-TOTUS-MIDI Totus 2 MIDI - Vent-Axia Commercial MVHR Unit (TOTUS2MIDI) heat-recovery vent-axia-heat-recovery VA-TOTUS-MINI Totus 2 Mini D-ERV MVHR Unit (TOTUS2MINI) by Vent-Axia heat-recovery vent-axia-heat-recovery VA-500D Vent-Axia HR500D Self Contained Heat Recovery Unit (370450) heat-recovery vent-axia-heat-recovery S-000-1.5 Spiral Ducting - 1.5m spiral-ducting-fittings spiral-duct B-15/600 15 Degree Bends spiral-ducting-fittings spiral-bends B-30/100 30 Degree Bends spiral-ducting-fittings spiral-bends S-000 Spiral Duct -3m spiral-ducting-fittings spiral-duct B-45/100 45 Degree Bends spiral-ducting-fittings spiral-bends T-100 90 degree Equal Tee Pieces for Circular Spiral Ducting spiral-ducting-fittings duct-branches-hvac-ventilation spigots-shoes-y-pieces-tees-spiral-duct-fittings B-60/500 60 Degree Bends spiral-ducting-fittings spiral-bends B-90/100 90 Degree Bends spiral-ducting-fittings spiral-bends SPTBR-000 Duct Suspension Rings (Rubber Lined) - Centre Nut M08/M10 spiral-ducting-fittings couplers-clamps-for-spiral-duct support-suspension-systems spiral-clamps-support-suspension-systems clipsclampscable-ties spiral-clamps CF-100 Female Couplers spiral-ducting-fittings couplers-clamps-for-spiral-duct C-100 Male Couplers spiral-ducting-fittings couplers-clamps-for-spiral-duct BB-100 Birds Beaks (with Mesh) spiral-ducting-fittings duct-terminations RC-100 Roof Cowls spiral-ducting-fittings duct-terminations roof-outlets-cowls DWI-25 ODE Starflex Duct Wrap 1.2mx18mx25mm insulation-products-accessories duct-wrap BLUE-MICRO-R BLUEDIAMOND® MICROBLUE® condensate pump c/w Ducting Kit X85-507 air-conditioning-products pumps BR-500 Self Adhesive Dust Protection Film for Ventilation Duct tapessealantsflashings dust-protection-for-ventilation-duct ASP-HFMAX Aspen MAX - Hi-Flow 1.7 Litre Tank Pump air-conditioning-products pumps ADS-100 Spiral Access Doors access-doors spiral-access-doors AW2-M08 Alpha Wedges nutsboltsfixings-fastenings wedge-nuts AT-50-75-100 Aluminium Foil Tape insulation-products-accessories tape-insulation-products-accessories tapessealantsflashings tape SDZ-1 Helios Anti Vibration Suspension Mount (set of 4) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-accessories products-by-brand helios-products attenuators-anti-vibration anti-vibration-mounts SDD-U Anti Vibration Pad for Gigabox fans (SDD-U 4Pcs) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-accessories products-by-brand helios-products attenuators-anti-vibration anti-vibration-mounts SDD-1 Anti vibration compression mounts (set of 4) inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-accessories products-by-brand helios-products attenuators-anti-vibration anti-vibration-mounts AV-VT0B Anti-Vibration Turret Mounts inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-accessories attenuators-anti-vibration anti-vibration-mounts ASP-ML Aspen Silent+ Mini Lime Pump & BBJ Trunking air-conditioning-products pumps ASP-U Aspen Pumps - Universal Peristaltic Pump - Peri Pro Air air-conditioning-products pumps S-100/300 Spiral Attenuators (Silencers) attenuators-anti-vibration attenuators-silencers BS-315 Back Draught Shutters inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-accessories sundry-items SS-2 BBJ Studding Suspenders air-conditioning-products clamps-support-clips BT-19 Butyl Tape 3mm x 19mm x 15m tapessealantsflashings gasket 016027-000 Circular Fire Damper with Drywall Flange fire-dampers-firesmoke-dampers circular-fire-dampers 016021-000 Circular Fire Damper with Frame fire-dampers-firesmoke-dampers circular-fire-dampers IFC-000 Circular Intumescent Fire Block fire-dampers-firesmoke-dampers intumescent-dampers MAV-100 Circular Metal Extract Air Valve ventilation-grilles-diffusers-air-valves-plenums air-valves DQ-1 Damper Quadrant ductshop-manufacturing-components damper-quadrants EF-149-ACO14E 149-ACO14E Auto Change over panel for EC Centrifugal Twin Box Fans inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-controllers products-by-brand elta-fans EF-149-ACO3-B 149-ACO3/B Auto Change Over panel for 3Phase AC/EC Fans inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-controllers products-by-brand elta-fans 149-POT-10 149-POT-10 - Electronic Controller for EC Fans inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-controllers products-by-brand elta-fans FDC-000 Externally resettable circular fire damper fire-dampers-firesmoke-dampers externally-resettable-fire-dampers KSOP-100 Fire Valve - Extract fire-dampers-firesmoke-dampers intumescent-fire-rated-air-valves ventilation-grilles-diffusers-air-valves-plenums air-valves FF-250 Flexi-Foot channel-systems channel-support-feet support-suspension-systems channel-support-feet-support-suspension-systems CH-20 Galvanised Slotted Channel channel-systems steel-channel CH-20P Galvanised Plain Channel channel-systems steel-channel G-15 Gasket Tape (Flange Seal Tape) tapessealantsflashings gasket GRL2-2 XP2 Gripple Loop End No2 x 2m (x10) support-suspension-systems gripple GRS2-2-M08 Gripple Stud End M08 with XP2 Express Hanger & 2m Wire support-suspension-systems gripple EHB-000 Helios EHB Electric Duct Heaters 100-400mm Dia inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-accessories products-by-brand helios-products BSX-1 Helios BSX Speed Controller and Reversing Switch inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-controllers products-by-brand helios-products electrical-accessories helios-products-electrical-accessories DVW-140 Ceiling Fan - 1400mm (55 inch) - 3 blade white inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans domestic-residential-fans products-by-brand helios-products ELS-GU Helios ELS-GU Flush mounted casing (without fire protection) For ELS Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans domestic-residential-fans fan-accessories products-by-brand helios-products ELS-GUB Helios ELS-GUB Flush mounted casing (with fire protection) For ELS Fan inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans domestic-residential-fans fan-accessories products-by-brand helios-products ELS-V-100 Helios ELS V 100 UltraSilence® Fan 100m³/hr inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans domestic-residential-fans products-by-brand helios-products FDH Helios FDH 160mm dia Flat Roof Cowl inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-accessories products-by-brand helios-products roof-outlets-cowls GBW-560/4 Helios GBW 560/4 Gigabox Fan 560mm dia 4-pole, 1phase inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand helios-products HQW-315/6 Helios HQW-315/6 Square Plate Axial Fan 315mm dia, 6-pole, 1 phase inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand helios-products LFBR-100 Helios LFBR Class G4 In-Line Filter Box for Circular Ducting inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans fan-accessories products-by-brand helios-products filtration helios-products-filtration MV-250 Helios MV-250 Mixed Flow Vent Fan 250mm dia inline-duct-whole-house-ventilation-heat-recovery-bathroom-extractor-fans commercial-industrial-fans products-by-brand helios-products DDF-125 Helios DDF Roof Terminal / Cowl - 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