100mm - 125mm White Round Ventilation Ducting Reducer

eSpares Approved part

Stock No: 3128418OH

100mm - 125mm White Round Ventilation Ducting Reducer

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£1.76
100mm - 125mm White Round Ventilation Ducting Reducer

100mm - 125mm White Round Ventilation Ducting Reducer

£1.76

  • In stock - Available for Immediate Despatch

    UK Next Working Day Delivery available

Product Description

100mm - 125mm White Round Ventilation Ducting Reducer

Upgrade and adapt your ventilation system with this high-quality 100mm to 125mm White Round Ventilation Ducting Reducer. Designed for both domestic and commercial ventilation systems, this duct reducer provides a secure, airtight connection between different sized round ducts for smooth and efficient airflow.

Manufactured from durable high-impact polystyrene, this reducer is built to withstand everyday use while delivering long-lasting performance. It efficiently converts 125mm round ducting to 100mm, making it ideal for extractor fan systems, HVAC installations, bathroom ventilation, kitchen extraction, and other airflow applications.

The integrated male spigot connection allows for quick and easy installation into System 100 ducting, ensuring a reliable and secure fit. Engineered to maintain excellent airflow performance, the reducer features a free airflow area of 12,266mm² at the 125mm end, reducing to 7,283mm² at the 100mm outlet.

A dependable solution for a wide range of ventilation projects.

Specification:

  • Width 100 - 125 mm
  • Manufactured from High Impact Polystyrene
  • Minimum free area on the 125mm diameter of 12,266mm²
  • Reduces to 100mm diameter free area of 7,283mm²
  • Male spigot for connection inside of the System 100 duct
  • Complies with Domestic Plastic Ductwork
  • Specification DW/154 and does meet UL94HB flammability standard
  • Max/Min Operating Temperatures: + 60°C to - 15°С
  • Manufacturers’ names and numbers are used for reference purposes only. These parts are in no way associated with the initial manufacturers parts
Don't Forget

100mm Stainless Steel Metal Hose Clip For Ventilation Ducting

eSpares Approved part

Diameter 100 mm Metal adjustable hose clip 100mm Stainless Steel Metal Hose Clip for Ventilation Ducting The 100mm Stainless Steel Metal Hose Clip... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£1.34

55 - 170mm Stainless Steel Metal Hose Clip For Ventilation Ducting

eSpares Approved part

Diameter 55 - 170 mm Metal adjustable hose clip 55 - 170mm Stainless Steel Metal Hose Clip for Ventilation Ducting Secure your ventilation system... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£3.12

Round Pipe Fixing Clip For Ventilation Ducting - 100mm / 125mm / 150mm

eSpares Approved part

Diameter 100 / 125 / 150 mm Universal Pipe Clip manufactured from polypropylene Secured to the floor slab/ joist using the predetermined screw fixing... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£1.12

PVC Ducting Sealing Tape 50mm X 4.6m - White

eSpares Approved part

Length: 4.6m Diameter 50 mm PVC Ducting Sealing Tape 50mm x 4.6m - White Seal and secure your ventilation system with this PVC Ducting Sealing Tape,... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£3.86

100mm - 150mm White Round Ventilation Ducting Reducer

eSpares Approved part

Width 100 - 150 mm Manufactured from High Impact Polystyrene Minimum free area of 16,994mm² on the 150mm diameter side Reduces to a free area of 7,298mm²... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£6.85

100mm White Round Ducting Connector With Damper

eSpares Approved part

Diameter 100 mm Manufactured from High Impact Polystyrene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Complies... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£2.11

Universal Tumble Dryer Vent Hose Connector

eSpares Approved part

Diameter: 4" / 102mm End connects directly to wall outlets (VNT6063 & VNT9025) Universal Tumble Dryer Vent Hose Connector If your tumble dryer... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£5.09

90 Deg. Elbow Bend Ducting

eSpares Approved part

Diameter: 3.9" / 100mm 90 deg. Elbow Bend Ducting If you need to turn your vent pipe through a tight 90 degree bend them this elbow could be just... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£6.85

White PVC Vent Hose - 1M

eSpares Approved part

Length: 1m (39.4") Diameter: 102mm (4") White PVC Vent Hose - 1M This easy to fit vent hose is quick to install and fits most tumble dryers!... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£6.68

Universal Tumble Dryer 2.5m Vent Hose

eSpares Approved part

Universal vent hose only Length: 2.5m Diameter: 4" Universal Tumble Dryer 2.5m Vent Hose Are you on the lookout for a new vent hose for your tumble... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£4.49

Tumble Dryer Vent Hose - 3m

eSpares Approved part

Length: 3m Diameter: 4" High Quality Universal Tumble 3m Dryer Vent Hose This easy to fit vent hose is compatible with most tumble dryers.... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£8.34

Universal Tumble Dryer 4m Vent Hose

eSpares Approved part

Length: 4m Diameter: 4" Universal Tumble Dryer 4m Vent Hose Are you on the lookout for a new vent hose for your tumble dryer? Well you have struck... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£4.96

100mm Brown Ventilation Cowl With Non Return Flap For Round Ducting

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Suitable for... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£5.57

100mm Terracotta Ventilation Cowl With Non Return Flap For Round Ducting

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Suitable for... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£5.57

Compatible 100mm Cowled Outlet With Non-Return Flap - Stainless Steel

eSpares Approved part

Includes rubber seal and fasteners Size: 100mm Compatible 100mm Cowled Outlet with Non-Return Flap - Stainless  Struggling now that your... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£18.71

100mm White Louvre Vent Grille For External Ducting

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Designed to... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£3.58

100mm Brown Louvre Vent Grille For External Ducting

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Designed to... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£3.62

100mm Terracotta Louvre Vent Grille For External Ducting

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Designed to... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£3.54

100mm Ventilation Louvre Grille With Insect Flyscreen – White

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Designed to... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£4.43

100mm Ventilation Louvre Grille With Insect Flyscreen - Brown

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Designed to... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£4.69

100mm Ventilation Louvre Grille With Insect Flyscreen – Terracotta

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Designed to... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£4.69

100mm Gravity Vent Outlet For External Ducting – White

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Supplied complete... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£4.26

100mm Gravity Vent Outlet For External Ducting – Brown

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Supplied complete... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£3.77

Vent Wall Outlet

eSpares Approved part

100mm fitting universal for all types of venting kits with 4 " Diameter and round fittings Colour: Terracota 100mm fitting universal for all types... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£14.50

100mm Round Vent Grille With Flyscreen – White

eSpares Approved part

Diameter 100 mm Manufactured from High Impact Polystyrene Minimum free area of 4,007mm² Male spigot for connection inside of the System 100 duct Round... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£2.48

Tumble Dryer Half Brick Vent Kit

eSpares Approved part

Kit includes: 1 screw pack (8 Screws & 8 Raw plugs) 1 Wall Plate 1 short round to rectangular adaptor 1 White gravity grill with rectangular spigot... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£22.06

Kit

Universal Inside Tumble Dryer Venting Kit

eSpares Approved part

Hose & Condenser Box Length: 2m Diameter: 4" Adapter Inner Size: 103mm Adapter Outer Size: 113mm Prevents humidity and dust from entering the room... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£7.64

Kit

125mm - 150mm White Round Ventilation Ducting Reducer

eSpares Approved part

Width 125 - 150 mm Manufactured from High Impact Polystyrene Minimum free area of 17,670mm² on the 150m diameter side Reduces to a free area of 11,500mm²... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£2.15

125mm White Round Ducting Connector With Damper

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polystyrene Minimum free area of 11,500mm² Male fittings for connection inside of the duct Compliant... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£3.42

125mm White Ventilation Cowl With Non Return Flap For Round Ducting

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 6,560mm² Male spigot for connection inside of the System 125 duct... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£5.57

125mm Brown Ventilation Cowl With Non Return Flap For Round Ducting

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 6,560mm² Male spigot for connection inside of the System 125 duct... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£8.32

125mm Terracotta Ventilation Cowl With Non Return Flap For Round Ducting

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 6,560mm² Male spigot for connection inside of the System 125 duct... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£8.32

125mm Stainless Steel Ventilation Cowl With Non Return Flap For Round Ducting

eSpares Approved part

Diameter 125 mm Minimum free area of 10,028mm² For installation on exposed external walls where wind or back pressure against the ventilation unit... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£31.56

125mm White Louvre Vent Grille For External Ducting

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 6,123mm² Male spigot for connection inside of the System 125 duct... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£3.58

125mm Brown Louvre Vent Grille For External Ducting

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 6,123mm² Male spigot for connection inside of the System 125 duct... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£5.51

125mm Terracotta Louvre Vent Grille For External Ducting

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 6,123mm² Male spigot for connection inside of the System 125 duct... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£5.51

125mm Ventilation Louvre Grille With Insect Flyscreen – White

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 6,123mm² Male spigot for connection inside of the System 125 duct... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£4.43

125mm Ventilation Louvre Grille With Insect Flyscreen – Brown

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 6,123mm² Male spigot for connection inside of the System 125 duct... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£6.91

125mm Ventilation Louvre Grille With Insect Flyscreen – Terracotta

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 6,123mm² Male spigot for connection inside of the System 125 duct... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£6.91

125mm Gravity Vent Outlet For External Ducting – White

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 11,600mm² Male fitting for connection inside of the duct Supplied... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£3.77

125mm Gravity Vent Outlet For External Ducting – Brown

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Minimum free area of 11,600mm² Male fitting for connection inside of the duct Supplied... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£4.43

125mm Round Vent Grille With Flyscreen – White

eSpares Approved part

Diameter 125 mm Manufactured from high impact polystyrene and has a minimum free area of 12,266mm² Male fittings for connection inside System 125mm... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£9.56

125mm Round Vent Grille With Flyscreen – Brown

eSpares Approved part

Diameter 125 mm Manufactured from high impact polystyrene and has a minimum free area of 12,266mm² Male fittings for connection inside System 125mm... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£5.94

125mm Stainless Steel Metal Hose Clip For Ventilation Ducting

eSpares Approved part

Diameter 125 mm Metal adjustable hose clip 125mm Stainless Steel Metal Hose Clip for Ventilation Ducting The 125mm Stainless Steel Metal Hose Clip... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£1.39

125mm Round Wall Plate - White

eSpares Approved part

Diameter 125 mm Manufactured from High Impact Polypropylene Suitable for use with Verplas System 125 Round Ducting Designed for use where existing... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£1.74

100mm White Internal Extract Steel Air Valve

eSpares Approved part

Diameter 100 mm Manufactured from White Epoxy Powder Coated Steel Minimum free area of 1,197mm² with Control Disc 10mm open Male spigot for connection... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£9.20

100mm White Ventilation Cowl With Non Return Flap For Round Ducting

eSpares Approved part

Diameter 100 mm Manufactured from Polypropylene Minimum free area of 7,283mm² Male spigot for connection inside of the System 100 duct Suitable for... More information

In stock - Available for Immediate Despatch

UK Next Working Day Delivery available

£5.57

Reviews