These are 3.0" transom mounted Thru-Hull exhaust fittings with a Flapper. A (Nom. O.D.)
= 3.00" / 76mm B (Ext. Length)
= 2.5" / 64mm C (Length)
= 5.5" / 140mm D (Diameter)
= 4.88" / 124mm E (Thru-Hull Length)
= 3.00" / 76mm
They won't corrode or change color, and install with ease. Our Thru-Hull fittings have been specially designed to continue to keep their attractive, cosmetic look for years. Thru-Hull fittings are black to match all boat trim combinations.