Left hand external thread and nut, FPT internal thread, for use with tanks having a wall thickness of 1/16" to 1/2". Polypropylene body and nut, polyethylene fariction washer, Hole Size: 3-1/8"

• Ideal when you need a watertight seal when making a penetration under water level.
• Use for liners, filters, skimmers and other pond components.
• Features two washers and internal pipe threads on both sides of the bulkhead.

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