Update 08/13/18 these things border on crap. The only thing they "might" be useful for is attaching - with just one piece - an outdoor grill or planter. the same money and think of a better solution, solid but not thought through. They have a smooth side and a knurled side that doesn't do anything as it won't cut into wood or bond when multiple pads are stacked - pads don't bond together and require glue to hold them together for a long time which is better than Wooden spacers. but seriously marginal given their blocking potential - try to find a better product
IKSTAR EVA Thermal Plastic Door Cover 38" X 82": Insulated Magnetic Curtain Keeps Cool Summer, Warm Winter For AC Room, Kitchen & Stair - Brown
40 Review
Non-Slip Brown Carpet Stair Treads - 15-Pack Of 8"X30" Runners For Wooden Steps
39 Review
RF Remote Control Switch EMylo Smart Wireless Relay AC 110-240V 2000W 1 Channel Momentary 433MHz Module With 2 Transmitters
40 Review
Ensure Safe Steps With Outdoor Non-Slip Stair Treads - 10 Pack Of 6"X40" Black Anti-Slip Strips
42 Review
Seal And Insulate Your Doors And Windows With TamBee Self-Adhesive Weatherstrips - 65.6 Ft Black Roll
38 Review
π₯ MH40NG Mr. Heater F272800 40,000 BTU Multi Natural Gas Garage Heater
26 Review
Keep Out Drafts And Sound With Self-Adhesive Foam Insulation Tape For Doors And Windows - 13 Ft Weather Stripping Seal Strip For Cooling And Air Conditioning (2In X 1/4In, Black)
39 Review
High-Performance Convection Heater By Mr. Heater Corp, Ranging From 75K To 200 BTU/HR
47 Review