20" x 20" x 2" Heavy Weight Aluminum Washable Air Filter

This 20" x 20" heavy weight air filter's multiple layers of expanded aluminum material are assembled in alternating rows to ensure maximum filtering and internal loading capabilities. This heavy duty filter also features an extra layer of heavier diamond grid to protect the finer layers underneath. Washable and reusable, this 2" depth metal HVAC filter, made of expanded aluminum, is designed for such applications as industrial, commercial, school, office building, hospital and hotel systems that specify a heavy duty permanent filter. Mitered and secured in one corner by rivets, this filter is enclosed in a heavy weight aluminum frame.