The Yaleseal 12" letter plate (also known as the Welseal) from well-respected home security brand, Yale is a modern letter box complete with weather seals.
Key features:
Telescopic sleeves for panel depths 20 - 40mm and midrail depths 40 - 80mm
Unique draught protection provided internally by twin nylon brush seals
Secure fixing from inside by two self-tapping screws
Full range of finishes available
Midrail fitting - for doors between 40mm & 80mm thick
Panel fitting - for doors between 20mm & 40mm thick