Capacity - 44.5 Gallon Dimensions ? 25” W x 63” L x 9" H (overall nominal measurements) Blow-molded Coupling (port) - 3 1/2" ID (inner diameter) and 4" OD (outer diameter) Wall dimensions (throughout) - 1/4” Dimensions - Front (tapered end) - 5 7/8" H Dimensions - Front (tapered end) - Lip - 3" H * Dimensions - Back - Overall - 9 1/8" H Dimensions - Back (base to top) - 7 1/4" H Dimensions - Back (base to lip) - 4 1/2" H Dimensions - Distance from base wall to center of port - 12"