Whitecap’s 6541 Stainless Steel Thru-Hull with Barb is constructed form 316 stainless steel. Designed for marine plumbing applications. Requires a 3/4″ hole size. Flange (outside diameter): 1-7/8″. Thread Length: 1″. Barb Length: 1″. Overall Length: 2-1/2″. Cut-Out: 1-1/8″. Maximum Hull Thickness: 5/8″.








