Manufactured with 2-hour fire-rated and weatherproof construction, each locker has an FM-approved fire-rated wall and roof design. Multiple layers of fire-resistant gypsum wallboard are encased between exterior heavy gauge steel and interior galvannealed sheet steel for maximum durability. A leakproof, all welded sump provides compliant secondary containment of hazardous liquids. Galvanized steel grate flooring removes easily for cleaning.

Gravity air flow vents include UL Listed fire dampers and fusible links for maximum safety. Hydraulic door closer ensures door will automatically close. Forty-two inch (1.07-m) wide door comes with UL Listed keyed lockset for security. Additional safety features include static grounding connections, anchoring plates, and NFPA 704 diamond decal.