When subjected to 312 hrs of salt fog spray testing (BHMA A138.18), zinc-plated hardware showed severe corrosion while hardware with Weather Guard™ protection withstood these harsh conditions with very little deterioration.
| Overall Length | : | 4 in |
| Suitable for | : | National's #29 Screw, Hook Hinge, National's #294 Hinge Straps |
| Material | : | Steel |
| Finish | : | Zinc |
| Thread Length | : | 3 in |
Line Drawing