ABS robust moulded frame set with internal and external sprung flaps.
The external flap has been designed to be opened to approximately 147 degrees, giving generous access to the sleeve aperture.
A secondary internal nylon brush seal has been incorporated to reduce air circulation when the letter box is in use.
The standard sleeve set is 40-40 and is suitable for door thicknesses of 38 to 78mm.
Torsion bars are used to spring load the flaps, this solution has successfully achieved a 40,000 cycle endurance test, opening to 140 degrees. This would equate to use four times a day over a period of 27 years.
A 10” ABS framed letterbox that takes full A4 size mail.
Aperture size: 216 mm x 38 mm nominal.
Option 1: (40-80 Sleeves) for door thicknesses of 38 – 78 mm.
Option 2: (20-40 Sleeves) for door thicknesses of 18 – 38 mm.