https://www.mccoys.com/shop/p/6972640-052303-28/us-hardware-v-016b-plumbing-cap-white
Used on roofs to cover and protect vent pipes. Size of 5-1/2 in OD x 3-1/2 in ID. Bagged.
Color
White
Dimensions
3-1/2 in ID x 5-1/2 in OD