ClosetMaid 96-in x 0.005-in x 16-in Clear Plastic Shelf Liner in the Wire Closet Accessories department at Lowes.com
Alera SW59SL3618 Shelf Liners For Wire Shelving, 36w x 18d, Clear Plastic, 4/Pack - Walmart.com
Plast-O-Mat 24 in. x 20 ft. Clear Ribbed Shelf Liner PMT226-C - The Home Depot
Amazon.com - Wire Shelf Liner 18 x 48 - Shelf Liners for Wire Shelf System - 4 Pack in Clear - Plastic Wire Shelving Shelf Mats
Amazon.com - Slendor Wire Shelf Liner Value Pack of 5 Heavy Duty Waterproof Non-Adhesive Industrial Strength Plastic Mats for Tier Shelving Unit, 16 x 36 Inch Clear