This Poly Sump Liner, model 29056, is specifically designed to fit inside the sump of a Justrite 22 gallon undercounter safety cabinet or 23 gallon under fume hood safety cabinet. It is made of high-quality polyethylene material that is durable, chemical-resistant and easy to clean. The liner provides an added layer of protection for the cabinet and helps contain any spills, drips or leaks. Its precise fit ensures a snug, leak-proof installation, making it an essential component for the safe sto