Grill with a flange and (4) screws to hold it in the foundation opening, has no flap or slide mechanism to open or close it, so the air can constantly move through. Size of 7-3/4 in x 15-1/4 in so it easily fits the standard 8 in x 16 in block foundation opening.
Product Details
Manufacturer: WITTEN AUTOMATIC VENT
Manufacturer's Part Number: 510WH
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Product Specifications
| Color | White |
| Depth | 7-3/4 in |
| Material | Polypropylene |
| Rough Opening Size | 8 in L x 16 in W |
| Suitable for | Standard Block Foundation Opening |
| Width | 15-1/4 in |