146 3 inch vent cap products are offered for sale by suppliers on Alibaba.com, of which lids, bottle caps & closures accounts for 21%, other valves accounts for 1%, and registers & grilles accounts for 1%.
A wide variety of 3 inch vent cap options are available to you, such as plastic, pp and metal.You can also choose from bottle, cans 3 inch vent cap,as well as from non spill, pilfer-proof, and other 3 inch vent cap, and whether 3 inch vent cap is black, white, or gold.