Ceiling and shaft firewall, NW 125, made of galvanized sheet steel with metallic quick release, corrosion and plumb free release device, intumescent material, enclosed by smooth-walled plastic inner pipe with completely free cross-section, DIBt Berlin Z-41.3-686. Fire resistance class K90 - 18017, For installation in ventilation systems according to DIN 18017-3, maintenance-free. Line tightness class II according to DIN 1946-8
.CasaFan GmbH
Senefelderstr. 8
D-63594 Hasselroth
E-Mail: info@ventilator.de
Internet: https://www.ventilator.de