Lifeguard Aquatics Bulkhead Includes bulkhead, rubber gasket and nut.

Choose Size: 1/2", 3/4", 1" or 2" 
Choose Style:
SxF - Standard
SxS - All Slip
FxF - All Threaded 

Required hole size to accommodate bulkhead fitting: 
1/2" fits: 1-1/4" hole
3/4" fits: 1-1/2" hole
1" fits: 1-3/4" hole
2" fits: 3" hole