External Grilles

The USUF external grille is made of acid-proof sheet metal and suitable for wall mounting using screws. The high housing and slanting lamellae provide protection against rainfall, and the detachable m...

Weatherproof Cowl for external walls, Stops drafts blowing back into the building. Available in a kit form HERE Internal flap to stop backdrafts Can also be used with a backdraft damper for maximu...

Weatherproof Cowl for external walls, Stops drafts blowing back into the building. Comes complete with Padded flaps and a rubber seal to stop unwanted noise and water getting into your house, If yo...