Quality overflow boxes feature bulkhead fittings for secure and convenient installation. Use these easy-to-install overflow boxes to transport aquarium water to under cabinet sumps, refugiums, or wet/dry filters. Gravity-feed system eliminates the need for complicated drilling or aquarium modifications.
Includes: U-tube, cylinder (round) foam, nylon screw and wing nuts, and pre-filter box. Nano has 3/4" bulkhead, PF-300 - PF-1200 have 1" bulkheads, and PF-1800 has 1-1/2" bulkhead.
NEW Replacement Nylon Screw Set includes (2) Wing Nuts, (2) Threaded Screws, and a Thumb Screw. Replace old or worn nylon screw and wing nuts to ensure secure placement of overflow box.
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