Description

Manufactured from high performance intumescent slats that are cut and interlocked together to form square, rectangular or circular dampers for use in doors, walls and rectangular or circular ducts.

On exposure to heat from a fire the slats expand to many times their original size to provide an effective barrier against the passage of fire and hot smoke.

The high performance dampers are suitable for horizontal and vertical applications.

 Benefits

Tested to BS476 part 20/22
Free air flow approx. 60%
Easy to install
Low Maintenance

Availability

Installation

The dampers are designed to suit most fire doors or can be installed into a fire resistant wall or partition. Simply cut a hole in the door or wall to give a tight fit around the damper. A bead of intumescent mastic should be placed around the perimeter of the damper, between damper and timber or damper and masonry wall, to seal the surrounds. 

The dampers can be fixed into position with hardwood beading or steel flanges. Faceplates to provide an aesthetic finish are also available in a range of sizes to suit square or rectangular dampers.

When used within H&V ductwork, pipes, etc. The damper should be positioned on the centre line of the fire barrier and a bead of intumescent mastic should be placed around the perimeter of the damper, between damper and ductwork/pipe to seal the surrounds and then secured in position with self-tapping screws.

In all cases the dampers are not load bearing and adequate support must be provided.

Health & Safety

The product does not present any known health hazards during or after installation.

Normal good industrial and personal hygiene practises should be observed.

Pyro-Seal is a registered trademark of Wessex Intumescent Supplies Ltd.
WIS Multiseal-It and WIS Draught Stoppers are trademarks of Wessex Intumescent Supplies Ltd.
All other trademarks are acknowledged.

All goods sold or offered are subject to our terms and conditions of sale - copies available on request