STI EF161408-O3 NEMA 3R Fiberglass Filter Fan - Opaque
Overview
The STI EF161408-O3 is a NEMA 3R filter fan unit built into an opaque fiberglass enclosure. This accessory is designed to mount on or integrate with access control panels, electrical cabinets, and outdoor security equipment that require passive thermal management and weatherproof ventilation. The opaque design blocks ambient light from entering the cabinet while allowing convective airflow to prevent heat buildup in sealed outdoor installations — a critical consideration when access control electronics, power supplies, or strike mechanisms sit in direct sun or high-ambient environments.
Compatibility
The EF161408-O3 is compatible with standard NEMA 3R-rated electrical enclosures and access control cabinet frames. Confirm mounting footprint and aperture dimensions with your panel manufacturer before order. Typical applications include surface-mount installation on hinged or bolt-together cabinet designs. This unit does not integrate with specific branded access control systems — it functions as a standalone passive thermal accessory for any cabinet meeting NEMA 3R dimensional and fastening standards.
Installation Notes
Mount the filter fan unit using the provided fastening points on the cabinet exterior. Ensure the intake side (typically the bottom or side facing away from prevailing wind and rain direction) is clear of obstructions for at least 12 inches. The opaque fiberglass construction is weatherproof but not submersion-rated — install so that standing water does not pool against the intake grill. No electrical connection is required; this is a purely passive convective device. Periodic cleaning of the intake filter element (typically every 6–12 months depending on dust load) maintains airflow efficiency.
