Size - 2-1/2" Bulkhead Fitting. Note,This thread is not an NPT thread, please refer to the dimensional drawing for specific diameters.
MATERIAL - Made of high quality ABS, uniform wall thickness and smooth non-scaling, corrosion resistance, high compressive strength, durable, long service life than the standard plastic bulkhead fittings, not easy to fade, peeling and cracking
USE - Suitable for installation in most tanks, ponds, storage barrels and rain barrel container openings with hydrophobic, breathable and heat dissipating properties for domestic, commercial and industrial use.
NOTICE - The outer thread of the tank connector is reverse threaded, it can only play a fixed role with its own nut, it can't be connected with other fittings, the plug is optional, it can only be used in conjunction with the inner threaded tank connector.
PRODUCT DESIGN - Installation requires a hole opener to drill holes for the fittings to pass through, locking nuts are reverse threaded, bulkhead fittings with PVC leak-proof sealing washers provide a tighter connection, and plugs keep contaminants out of the tank and keep it clean.