Perforated metal plank - Flame-retarding covering BN-OF
Flame-retarding covering "BN-OF"
Flame-retarding covering BN-OF
Thickness Module R Length L Width B Height H Rim Tu
S 235JR galvanized acc. to DIN EN ISO 1461 2,5 mm (2 mm) 62,5 mm preferably n x R 150, 200, 250, 300 mm 30, 35, 50, 75, 100 mm approx. 10 mm
Sketch retarding covering "BN-OF"
The flame-retarding covering BN-OF is fabricated out of the perforated metal plank type BN-O. On one side of the single elements a flat strip of 30 x 3 mm is welded. Both open sides are closed with flat material. Elements having a length bigger than 2000 mm have welded bolts of round material ø 8 mm x 25 mm. In case of fire the BN-OF covering will stem the flames until the arrival of the fire-brigade.