Dura-Bench Greenhouse Plastic Bench TopsDura Bench Plastic Greenhouse Bench Top is a smoother and longer lasting growing surface for your plants. THESE HAVE A MINIMUM QUANTITY OF 5 (SOLD IN PACKS OF 10, MINIMUM PURCHASE OF 5 PACKS) Designed to replace traditional wood, wire, and expanded metal bench top, DURA BENCH panels are made from durable, non porous polypropylene plastic. The DURA BENCH Plastic Greenhouse Bench Top eliminates problems like corrosion, rust, and sharp edges typically