STI EF201610-W3 NEMA 3R Filter Fan Window

Overview

The EF201610-W3 is a NEMA 3R-rated fiberglass filter fan window assembly designed to protect access control panels and security equipment from weather exposure while maintaining active cooling and air circulation. This is the window component of STI's EnviroArmour® fiberglass enclosure system—it mounts to the front face of a main enclosure body to provide filtered ventilation without compromising IP rating or tamper resistance.

Compatibility

This window fits STI EnviroArmour® fiberglass enclosure bodies in the EF201610 series. Verify your main enclosure model number before ordering—the -W3 designation indicates this is the window/fan assembly for that specific body size. Consult STI documentation or your installer to confirm the matching enclosure model.

Installation Notes

Mount the filter fan window directly to the front face of the compatible enclosure body using fasteners appropriate to fiberglass (typically stainless steel hardware to avoid corrosion). Ensure the gasket or seal is in place to maintain NEMA 3R integrity—rain spray and wind-blown dust require a continuous seal around the perimeter. Verify that internal clearance in the main enclosure is sufficient for the fan depth. Do not operate the fan without a clean or replacement filter element in place; clogged filters reduce cooling effectiveness and can damage the motor.