Our trays are made of Polyethylene proof-retard material. They are light weight and long lasting with a 5 year pro-rated warranty when used in conjunction with our scrapers. Trays are available in 3″ and 6″ depths and colors: white, blue, red and green. Covers are available for both sizes along with dollies, scrapers and racks. Discounts available with quantity orders. Call National Marketing, Inc. @800-994-4664 (734-266-2222) or visit www.nminc.com for these items and a complete line of smallwares.