Brand: Seifert Item: Fan hood IP Rating: IP56 Material: Carbon steel Application: For increasing the protection classification of side-mounted fans and grilles NEMA Rating: 3R/4/12 Maximum Covered Area: 12.80 x 12.80in Gasket Type: Silicone Maximum Fan Cutout Size: 11.46 x 11.46in Seifert fan hood, fits 11.46 x 11.46in fan cutout, carbon steel, silicone gasket, NEMA 3R/4/12, IP56, for increasing the protection classification of side-mounted fans and grilles.