Chicago Approved, Surface/Wall Mount, Sealed Lead Acid (SLA) Products (14 items)

Chicago Approved exit signs must meet specific rules and guidelines. Signs must be rectangular 20 gauge sheet metal with a glass or plastic face. The letters and arrows must be red on white. All exit signs must be internally illuminated with at least a 10 watt lamp.

Exit signs & emergency lights that are surface mountable are typically one sided and have a back plate that can be connected directly to a wall or flat surface.

Sealed lead acid batteries are sometimes referred to as VRLA (valve regulated lead acid) and there are two primary types AGM and Gel. We offer both AGM and Gel batteries, each has its advantages over the other depending on the specific application. SLA batteries usually last between 3 to 5 years with typical usage. The optimum operating temperature for the lead-acid battery is 25°C (77°F). Elevated temperature reduces longevity. As a guideline, every 8°C (15°F) rise in temperature cuts the battery life in half.