184118-S Features: -Zero clearance to combustibles. -Single penetration through wall for both intake and exhaust. Application: -Drain. Product Type: -Flange/Collar. Finish: -Chrome. Dimensions: -18" Above roof, 21" below. Overall Height - Top to Bottom: -38.8". Overall Width - Side to Side: -8.5". Overall Depth - Front to Back: -7.9". Overall Product Weight: -7 lbs.