Search the Site
New Products

315mm dia Large Format Circular Diffuser - Silver/Grey

315mm dia Large Format Circular Diffuser - Silver/Grey

150 dia Plastic Supply/Exhaust Valves

150 dia Plastic Supply/Exhaust Valves

2mm Wire Rope 150m Reel

2mm Wire Rope 150m Reel

Wires with Carabina 2mm x 2m - Pack of 10

Wires with Carabina 2mm x 2m - Pack of 10

400mm Dia Plate Mounted Axial Fan - Single Phase

400mm Dia Plate Mounted Axial Fan - Single Phase

Ductwrap - Isover ClimCover Alu2 25mm 18m Roll

 Ductwrap - Isover  ClimCover Alu2 25mm 18m Roll

Semi-rigid Aluminium

Ventilation Ducting  | Flexible Ducting |  Semi-rigid Aluminium



Single layer aluminium flexible duct with a 4mm corrugation depth to allow the duct to be compressed for transportation; duct is supplied in 750mm long boxes and extends to 3m. Stated diameters refer to inner bore size. Overall size is 8mm larger than the internal size.

Semi-rigid duct is easily formed by hand to form bends and offsets. The cross sectional area is maintained through the bends ensuring low airflow resistance. The 'stayput' characteristic of the duct means minimal support is required.

Centre line bend radius:
80mm - 200mm = duct diameter
250mm - 355mm = 1.5 x duct diameter
400mm - 500mm = 2.5 x duct diameter

Operating temperature:

up to 300°C.

Fire resistance
BS476 Part 8 - 15 minutes.

80mm Semi-rigid Flexible Ducting
PAK80


80mm diameter 3 metre length of semi-rigid flexible duct.


8.16 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Spiral Tube - 3m Lengths (Ref: SR)
2. 80 dia 90° Pressed Bends with Seals (Ref: BPL90-80)
3. Suspension Rings (Ref: SUR)
80mm Semi-rigid Flexible Ducting

100mm Semi-rigid Flexible Ducting
PAK100


100mm diameter 3 metre length of semi-rigid flexible duct.


10.09 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Hose Clips (Ref: HC)
2. Male Couplers (Ref: NP)
3. Hose clips - Bundle of 10 (Ref: HC10)
100mm Semi-rigid Flexible Ducting

125mm Semi-rigid Flexible Ducting
PAK125


125mm diameter 3 metre length of semi-rigid flexible duct.


11.62 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Hose Clips (Ref: HC)
2. Female Couplers (Ref: MF)
3. Male Couplers (Ref: NP)
125mm Semi-rigid Flexible Ducting

150mm Semi-rigid Flexible Ducting
PAK150


150mm diameter 3 metre length of semi-rigid flexible duct.


15.34 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Male Couplers (Ref: NP)
2. Hose Clips (Ref: HC)
3. Female Couplers (Ref: MF)
150mm Semi-rigid Flexible Ducting

160mm Semi-rigid Flexible Ducting
PAK160


160mm diameter 3 metre length of semi-rigid flexible duct.


16.35 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Hose Clips (Ref: HC)
2. 160mm Dia Radiused Flanged Spigot (Ref: ILPR160)
3. Male Couplers (Ref: NP)
160mm Semi-rigid Flexible Ducting

200mm Semi-rigid Flexible Ducting
PAK200


200mm diameter 3 metre length of semi-rigid flexible duct.


20.12 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Hose Clips (Ref: HC)
2. Male Couplers (Ref: NP)
3. 200mm Male Couplers with Seals (Ref: NPL200)
200mm Semi-rigid Flexible Ducting

250mm Semi-rigid Flexible Ducting
PAK250


250mm diameter 3 metre length of semi-rigid flexible duct.


25.43 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Male Couplers (Ref: NP)
2. Hose Clips (Ref: HC)
3. Female Couplers (Ref: MF)
250mm Semi-rigid Flexible Ducting

300mm Semi-rigid Flexible Ducting
PAK300


300mm diameter 3 metre length of semi-rigid flexible duct.


32.34 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. 300mm Male Couplers with Seals (Ref: NPL300)
2. 200mm Male Couplers with Seals (Ref: NPL200)
3. 90° Bends (Ref: B90)
300mm Semi-rigid Flexible Ducting

315mm Semi-rigid Flexible Ducting
PAK315


315mm diameter 3 metre length of semi-rigid flexible duct.


44.45 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. 315 dia Non-return Damper with Seals (Ref: DAOSL-315)
2. 90° Bends (Ref: B90)
3. Split Ring Supports (Ref: SPR)
315mm Semi-rigid Flexible Ducting

355mm Semi-rigid Flexible Ducting
PAK355


355mm diameter 3 metre length of semi-rigid flexible duct.


51.80 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Hose Clips (Ref: HC)
2. Suspension Rings with EPDM Rubber (Ref: RSUR)
3. Male Couplers (Ref: NP)
355mm Semi-rigid Flexible Ducting

400mm Semi-rigid Flexible Ducting
PAK400


400mm diameter 3 metre length of semi-rigid flexible duct.


62.34 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. 90° Bends Long (Ref: BS90)
2. 45° Bends (Ref: B45)
3. Female Couplers (Ref: MF)
400mm Semi-rigid Flexible Ducting

450mm Semi-rigid Flexible Ducting
PAK450


450mm diameter 3 metre length of semi-rigid flexible duct.


63.86 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Hose Clips (Ref: HC)
450mm Semi-rigid Flexible Ducting

500mm Semi-rigid Flexible Ducting
PAK500


500mm diameter 3 metre length of semi-rigid flexible duct.


72.80 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Flanged Spigots (Ref: IL)
2. Hose Clips (Ref: HC)
3. Spigot Plates (Ref: SPG)
500mm Semi-rigid Flexible Ducting

Your Basket

Items:
Total:

View BasketCheckout
Best Sellers

100 dia 90° Pressed Bends with Seals

100 dia 90 Pressed Bends with Seals

5.64

600mm 30x30 Cantilever Support

600mm 30x30 Cantilever Support

13.25

PU S1 Clear Extraction Hose 10m Length

PU S1 Clear Extraction Hose 10m Length

M8 Back Plate Threaded Rod Hanger

M8 Back Plate Threaded Rod Hanger

0.90

100mm dia Chrome Exhaust Valve

100mm dia Chrome Exhaust Valve

7.96