Grille Curtain. Clear anodized aluminum tubes over steel rods for added strength and security.
Guides: Clear anodized extruded aluminum with polyethylene wear strips for smooth operation
Bottom Bar. Clear anodized aluminum with low friction nylon blocks mounted at ends for smooth and quiet operation.
Locking. Slide bolt locks standard on all Grilles.
Counterbalance. Helical torsion springs calculated for optimal ease of operation.
