Satin Black Magflap MK2 - Letter Box Draught Excluder - Magnetic Closure - Made in the UK

Magnetic letterbox draught excluder High quality, easy to fit and proven to work! Reduces cost of bills, by preventing heatloss through letterboxes Unlike other draught excluders, Magflap's magnetic closing doesn't let the heat out or the cold in. Internal or external fit, the dimensions are internal aperture 70mm x 290mm, and external measurements (outer edges) 100mmx 341mm