1.Certification: CE, TUV, RoHS, CB. 2.Resist bad temperature, Fireproofing, Super defensive, 3.Auto Locking Device, Anti-theft Name:Roller shutter component side plate Material:Made of aluminum alloyspec: 205mm, 250mm, 300mm, 350mm 400mm, 450mm available.Unit: pairUsage:Roller shutter component side plate for Garage door / Roller Door / Roll up door / windows side plate