The 3.5-Gallon Gleco Trap® HV Refill features a newly engineered, air-tight lid with threaded inlet and outlet extensions that reserve an air pocket inside. When the trap is full, simply remove the air-release plug to drain inlet and outlet plumbing into the bucket before disconnecting. Patented design prevents the mess and contamination that occurs with removal of traditional plaster traps. 11"H.
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