SL887804351 SeaLux Marine 90 degree L-Shape Thru Hull/ Scupper With 316 Stainless Steel Trim Cover, Molded from polypropylene with fiber glass for strength. Not recommended for use below the waterline. Hose: 3/4" ; Flange : 1-7/8" ; Max Hull Thickness: 1-3/8" Cut Hole for installation: 1-3/8" More dimension available on product picture.