Seller: ladybug007 (30,660) 99%, Location: Newport, Vermont, Ships to: US, Item: 401755157026 This is an OLD cast iron floor grille that has some damage to the outside edge along one side (please see photos). The grille with louvers work well. The outside measurement of the cast iron grille measures 11 3/4" long by 9 3/4" wide. The grille needs a floor opening of 9 1/2" long by 7 3/4" wide. Very old..and in Very good condition.