Guardian Series KNP315FL NEMA 4 or NEMA 4XIndoor/Outdoor Filter Fans

The Guardian Series KNP315FL is a NEMA 4 or NEMA 4X rated filter fan designed for reliable indoor and outdoor operation in demanding industrial environments. This robust unit maintains its protective enclosure rating when used with the provided filter, ensuring dependable performance even in wet, dusty, or corrosive conditions where standard equipment would fail.

The unit features a heavy-duty steel shell with a durable baked powder finish in ANSI 61 gray, with custom color options available to match facility specifications or aesthetics. NEMA 4X models are constructed with stainless steel shells and internal corrosion-resistant coatings, making them ideal for applications involving chemical exposure, high moisture, or other hostile environments that would compromise conventional materials. Integrated fan guards and a sealing gasket work together to provide comprehensive protection, while the IP55 filter rating offers enhanced safeguarding against dust and moisture ingress. The washable, reusable filter reduces long-term operating costs by eliminating the need for frequent replacements.

Electrical and mechanical construction emphasize reliability and ease of installation. The unit includes a six-foot minimum length 3-wire power cord for convenient connection to standard electrical outlets, and UL shielded ball bearing motors deliver smooth, dependable operation. Secure mounting provisions ensure stable installation in any orientation. The Guardian Series KNP315FL is UL/CUL Listed (pending), providing confidence in safety and performance standards for critical cooling and filtration applications.