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Manufactured from chemical resistant rigid PVC. It allows air only to flow in one direction through the duct system. When the fan is switched off the gravity non return flaps prevent air from re-entering the fan system and contribute to reducing heat loss. Connections are female socket one end and male spigot the other end.

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Cod. Art.
Art. Code
Diametro
Diameter
Materiale
Material
Altezza
Height
Peso
Weight
SRV100P
ø 100
PVC
260 mm
 
SRV125P
ø 125
PVC
280 mm
0,5 Kg
SRV160P
ø 160
PVC
330 mm
0,7 Kg
SRV200P
ø 200
PVC
350 mm
1 Kg
SRV250P
ø 250
PVC
380 mm
2 Kg
SRV315P
ø 315
PVC
420 mm
3 Kg
SRV400P
ø 400
PVC
540 mm
3,5 Kg
SRV500P
ø 500
PVC
550 mm