British Products Made in British Foundries

flap4and5
DSCF6195How to attach ducting to 5"How to attach ducting

White Plastic Flap Valve

£15

A flap valve for both the 4″ and 5″ conservation vent grilles or to install in round ducting.
The flap can be duct taped directly onto the back of the conservation vent to keep out any insects and prevent any backdraught.

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