Elbow thru hull, 1-1/8" hose barb This white thru hull fitting has a classic mushroom head and is molded of UV stabilized, high strength Acetyl. The hose barb fits 1-1/8" ID marine hose (standard for many bilge pumps) and has room for double hose clamps. The elbow is 100° instead of the standard 90° which makes installation easier. Includes mounting nut. Made in the USA ! Dimensions: Head is 2.875" diameter, threads are 1.5" long and it requires a 1.875" mounting hole. Plastic thru hulls should only be used above the waterline. For below the waterline use, contact us with your specifics and we will find the best thru hull for your application!