nVent Hoffman - Hoffman HG0400403 HG Filter Fan Exhaust Grilles, fits HF04 fans, 4-inch, IP54, Black

HG Filter Fan Exhaust Grilles have a unique click-fit design which quickly install into enclosure wall; no tools or fasteners required. Grilles open with the flick of a finger and remains attached after opening for easy access to the filter. Features: Click-Fit design quickly installs into enclosure wall; no tools or screws required; Opens with the flick of a finger for easy filter replacement; Enclosure side wall mounting; Standard rope gasket provides proper seal to the enclosure; Similar cut-out sizes as other filter fan manufacturers; Hinged grille remains attached after opening; Size range from 4 inch (102 mm) to 13 inch (325 mm); Free air flow from 21 CFM (36 m3/hr.) to 484 CFM (822 m3/hr.)