Sleeved Letterbox - Aluminium

Letterbox Draught Excluder Choose From White - Black - Aluminuium - Gold Specifications - Miniumum aperture size 258mm x 41mm Maximum aperture size 280mm x 50mm Minimum door thickness 30mm Maximum door thickness 70mm Suitable for wooden or upvc doors Built in internal brush strip to resists draughts Attractive appearance, with fixings concealed behind outer flap Quick and easy to fit, in the factory or on site Durable rust and tarnish free Aluminium flaps with PVC internal construction 4 year manufacturers warranty Advantages of Draught Proofing - As a rough guide, fitting draught proofing can reduce your heating bill by 8-10/year per window or door. Your house or commercial property will lose heat during cold weather partly due to poor thermal insulation, but also due to air infiltration or the permeability of the building. Infiltration or permeability is measured in meters cubed per hour per square meter of floor area. A typical building built 1900 to 1990 will lose around 15-25