STI STI-6521-S Protective Cover for Keyless Locks
Overview
The STI-6521-S is a molded polycarbonate hinged cover designed to shield keyless locks, biometric readers, keypads, and electrical controls from vandalism, accidental damage, and weather exposure. Smoke-colored finish. The cover mounts directly to keyless lock installations and protects the reader face and entry mechanism from direct impact, ice buildup, and debris—a practical defensive layer in high-traffic or outdoor access control deployments.
Compatibility
The STI-6521-S fits keyless lock systems and works with biometric fingerprint readers and keypad credential types. Designed for retrofit installation on compatible keyless lock assemblies. Consult the keyless lock manufacturer's documentation to confirm the STI-6521-S cover mounting footprint matches your specific reader or lock housing before purchase.
Installation Notes
Fast, easy installation—cover comes complete with mounting screws and gasket. Stainless steel torsion spring maintains the closed position automatically. Operating temperature range: −40°F to 250°F (−40°C to 121°C)—suitable for indoor and outdoor environments. Gasket replacement recommended after five years of use in high-moisture or coastal environments. No special tools or wiring required; mechanical fastening only.
What's in the Box
- 1x STI-6521-S polycarbonate cover with hinged design
- Stainless steel torsion spring (pre-installed)
- Mounting screws
- Gasket
Warranty and Durability
Backed by a three-year manufacturer guarantee against polycarbonate breakage in normal use. Inexpensive replacement gaskets available if seal deteriorates after extended service. Cover construction uses super-tough polycarbonate molding—rated to absorb repeated strikes without cracking or losing structural integrity.
