Used for example in connection with roof hoods type VHL, VHA and VHP, where there is demands on sound attenuation effect plus a wish for a harmonic transition between roof transition and hood.
Constructed around a perforated inner duct, outer spirally wounded ducts with intermediate insulation and equipped with end cap at the bottom. The roof plate is mounted on the duct and easy to fit to the roof´s shape. It is recommended to fasten GISOLP to roof beam, use beam fixture type SBG.
Insulated with minimum 50 mm insulation material and thereby meets the standard DS 428.3 "Norm for brandtekniske foranstaltninger ved ventilationsanlæg". (Standard for fire technical regulations at ventilation plants).
State the roof inclination at order. Max. 55°. 0° will as standard always be delivered with galvanized steel sheet.
From factory sealed tight around the duct.
Before the mounting of the transition the seal shall be checked for any damages from transportation and handling.
After the mounting the seal shall likewise be checked for any damages from the mounting.
The seal shall continously be checked for damages (advisably at least one time per year).