Envirograf Letterbox Unit with Front Flap and Security Hood - Kit C

About Kit C - Letterbox unit with front flap and security hood

An intumescent fire and smoke protection letter flap system comprising a frame fitted with smoke protection seal and a spring loaded flap, which can be used on either side of a door, and an intumescent liner to fix into the door aperture, only 3.5mm thick and a rear security hood.  

The addition of a rear security hood with brush seal is to stop people putting their hand through the letterbox.

IIntumescent letter boxes are mainly used on door of flats, so that if there was a fire in the flat, the fire would not break through to the escape route.

Intumescent Letterbox with a Rear Security Hood

Sizes - aperture:

• 50mm x 267mm - overall 75mm x 315mm
• 69mm x 290mm - overall 100mm x 335mm

Colour of security hood - black