Inner size of throat
(width * length)
The double flap ventilator’s size can be customized according to client’s requirement.
The smoke ventilator is suitable for production workshops in multiple industries such as automobile, rail transit, electronics and various other light industries.
The window sash and window body of the roof smoke vent skylights with "nail-free and glue-free waterproof structure patented technology" do not require any silica gel, self-tapping nails, drilling or rivets; the window sash and the window body are all integrated holistically into the waterproof structure, there is no self-tapping screw, rivet, screw or bolt that destroy the integrated structure, and waterproofing completely relies on its own structure.