These foundation vent covers are made exclusively for crawl spaces. They consist of two separate parts, the frame which is attached to the foundation and the grille which is removable. Both are cast from an exterior grade urethane resin that won’t rot, rust, corrode or grow mold. The grille can be removed by unscrewing four knurled knobs, in order to seal off the foundation in cold weather months by inserting a sealing plate behind the grille, or to put in a fiberglass screen mesh behind the grille in the warm weather months to allow ventilation in the crawl space. Therefore, the homeowner can service these vents from the outside of the house without having to crawl into the crawl space. Each grille provides 73 square inches of ventilation with the fiberglass screen mesh installed. All installation hardware, plus the sealer plate and fiberglass screen mesh is included.
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