From the Anvil Blacksmith Traditional Letterbox
For composite and upvc doors the recommendation is to use the door letterbox which is supplied as a full kit and contains a tunnel and brushes to reduce drafts and insulate the door. The sleeve inside the letterbox also protects the door from moisture and masks the aperture cutting.
Supplied with matching bolt through fixings.
DIMENSIONS:
315mm Overall Width
92mm Overall Height
249mm Opening Width
41mm Opening Height
283mm Fixing Centres
72mm Maximum Door Thickness
42mm Minimum Door Thickness
FINISH:
Black
Pewter
Aged Brass
Polished Nickel
Polished Chrome
