Construction Metals 5.5 in. H X 7.75 in. W White Polystyrene Vent Plug

The Construction Metals Inc. 5-1/2 in. x 7-1/2 in. Vent Plug (2-Pack) includes 2 single 5-1/2 in. x 7-1/2 in. pieces that have been pre-attached for easier handling and installation. The foam plugs serve as insulation during the harsh winter months, preventing the collection of cold air and moisture below the house. The DVBPSM is specifically molded in the design of the older Lawrence style block vent.