Cars & Other Vehicles Do I need a floor for walk-in cooler? How thick is a walk-in cooler floor? 4.75 inches thick Do frost free freezer mats work? These pads totally work. The frost basically forms on these pads instead of on the side walls of the chest freezer. The only negative is the pads are kind of small so I had to use 8 pads total just for a small freezer. Related Posts:Hotpoint models: top-freezer Refrigerators and Freezers, HotpointHotpoint Refrigerator Models.How to Blanch and Freeze Peas Fresh from the Garden or the Shop.The best chest freezer for a hot garage in 2021.There is a guide to standard sofa sizes and dimensions.