Small Niche Gasket Set - without double wall gasket

For Use With: Pentair Small Stainless Steel Niche, Spa Lights

There is a 3/8" hole - on opposite sides of gasket

There are four 1/4" holes - evenly spaced

Centerline to centerline - from one 1/4" hole, to the opposite hole - is 5-3/4"

Outside diameter : 6-1/2"

Inside diameter : 5-3/16"

Thickness : 3/32"