Product description

WILLIT® A1 FIREWALL DUCTS consists of two pipe shells (300 mm long) made of foamed insulation material with a ceramic bond based on two inorganic components, silicon oxide and aluminium oxide. Included in the delivery is an aluminium foil for laminating the Willit®A1 fire wall duct and an aluminium tape for sealing against vapour diffusion.


Product details

The melting point is > 1000°C according to the test report of MPA, Braunschweig. The Willit®A1 foam belongs to the materials of building material class A1 according to the building authority test certificate.
The Willit®A1 fire wall penetration seal has been approved for pipe penetrations in areas with special fire protection requirements by an expert report of the Technical and Testing Institute for Construction MPA.
The solvent-free Willit®A1 adhesive guaranteed simple and clean processing.


Product details

technical data sheet


Ralf Eifert

Ramona Lawniczek

Production Manager Insulation

Phone:+49 231 9640 801
Fax:+49 231 9640 899

Monika Staubitz

Internal Sales Insulation

Phone:+49 231 9640 803
Fax:+49 231 9640 899