This is how roller door materials should look
Solid die-cast aluminium end-plates for strength.
Inertia brake attached to the end plate to arrest the door in case of gear shearing.
Steel tubular motor housing for added strength.
Manual release in the event of power failure.
Sturdy articulated auto-locks to keep the door firmly closed and locked
Full box cover as standard - keeps the door mechanism clean and dust free.
Full box covers also helps avoid finger trapping
Solid extruded aluminium guides with deep pile brushes to guide and protect the moving door.
Insulated lathes with end caps to keep curtain in good alignment.