"BLACK" Pro-Stock 'Round/Oblong Opening' 45" Long, 15" Wide (Less Flange), 19-1/2" Wide With Flange, 11" High

PR-400B: "BLACK" Pro-Stock 'Round/Oblong Opening' 45" Long, 15" Wide (less flange), 19-1/2 wide with flange, 11 High. Opening in bottom: 39-1/2" long X 15" wide. No "Top Seam" / "Mold Line" to finish off. Oblong Opening: 8-3/8" wide x 6" high. (K Style).