Insulated fan doors from Tulderhof fit most V-belt driven exhaust fans.
The doors are made out of 2 mm formed steel. On one side a thick 18 mm insulation layer is glued. The soft insulation layer closes draught free on the frame of the exhaust fan. The door can be closed with a key. A hollow pipe is optional and is used as a support when the door is open (see picture).
We can make the doors any size you need. Standard sizes are 1,38m x 1,38m, 1,09m x 1,09m en 0,95m x 0,95m. These sizes are always in stock.