Special roof fan TL4 for roof cut-out 50 x 50 cm. Double hood with TUV approval. Labyrinth seal prevents snow and rainwater from entering. Can be set up on all sides, gradation also millimeters. For roof thickness 30 to 40 mm. Includes 4 individual exhibitors. Description: 500 x 500 mm, 4 individual exhibitors pack size: 600 x 600 x 160 mm weight: 5.2 kg gross weight: 6.3 kg.