Product Info Catalog HVAC Ventilation Louvers, Vents & Turbines 6-1/2x7-3/4 Foam Plug 6-1/2x7-3/4 Foam Plug Request a Quote UPC: 736223150870 Manufacturer: Construction Metals Inc SKU: 519504 Model Number: DVBP 6-1/2" x 7-3/4", Medium Foam Plug, For Vent Air Foundation Vent, Each Plug Splits In Half For 1 Pair To Function On 1 Vent.