Plastic bodied black frame with an aluminum face plate.
It has a smoke, weather and draught seal.
The Intumescent seal fits round the body of the letterbox to crush and seal in a fire.
To fit apperture size 250mm x 35mm
Overall size 300mm x 67mm
This product has been included in a fire test employing the general procedures and criteria of BS476 Part 22 1987, built into a composite door, maintaining the integrity of the door for 61 minutes.
Also tested to European Standard EN1634-1 (2000), achieving 68 minutes integrity
Envirograf Product 49L
About Economy Intumescent Letterbox Unit
An intumescent fire and smoke protection letter flap system. Consists of a frame with smoke protection seal, a spring-loaded flap and an intumescent liner to fix into the door aperture.
Provides up to 68 minutes protection
Can be installed on either side of a wide range of doors.
A security hood or lockable letter plate can be supplied as internal alternatives to fit to the door.
Economy letter box is ready to install in mail apertures, replacing the existing standard letter flap.
Application
Insert the Letter Box Unit into the hole and fix with screws supplied; insert the liner to finish and then fix with double sided tape and pins supplied.
For Internal Flaps / Security Hoods, align with the external flap and fix with screws supplied.
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