This product has passed the European standard BS EN-1634 (1 hour / 2 hours)fire detection!
Consealed drop down seal, four-bar linkage mechanism, suitable for doors with slots in the door leaf. During installation, there is a 34mm*14mm through slot at the bottom of the door. Place the product in it, and fix the cover and sealer at both ends with screws (or use screws to fix up from the bottom of the sealing strip). The use of this product does not affect the overall door style.
• Length:380mm-1800mm
• Sealing gap:3mm-15mm
• Finish:Anodized silver
• Fixing:With stainless steel bracket. With pre-mounted screws under the seal,and the standard screws are equipped with hanging plate
• Plunger optional:Copper button, nylon button, universal button
• Seal:Silicon rubber seal, gray or black colou