Tronic Exhaust Fan Disc Valve Cover 150mm with Removable Core

Our review

This Tronic disc valve cover is a 150mm backdraft shutter for an exhaust fan opening, made from aluminium with a core you can take out. That removable core matters in practice: dust, grease and insects collect on these covers over time, and being able to lift the centre out makes cleaning far less fiddly than with a sealed unit. It suits anyone finishing off a bathroom, kitchen or utility extractor run who wants the vent to close when the fan is off, keeping draughts, rain and pests from coming back through the duct. Before buying, measure your existing duct or wall opening carefully, since 150mm is the nominal size and the actual fitting tolerance can vary between fan models. Also check how the cover is meant to be fixed, because the listing gives no mounting details. Compare it with plain gravity flaps, which are cheaper but often rattle and seal poorly, and with plastic shutters that can yellow or crack outdoors. Aluminium is the more durable choice where heat or sunlight is a factor. If you need exact dimensions or fixings, ask the seller on Sokonia before ordering.