ENERGY SAVING – Designed to reduce heat loss, helping keep your home warmer and lowering heating bills 
DRAUGHT PROTECTION – Seals gaps around your letterbox to block cold air, wind and dust 
BRISTLE BARRIER - Integrated durable bristles add extra protection against draughts, debris and insects 
SPRING CLOSING FLAP - Spring assisted flap closes firmly after use to improve insulation and prevent rattling 
EASY TO FIT - Installs in minutes with basic tools and suits most standard doors, with fixings included