Bison Level.Up Slope Leveler is an accessory to the Bison Level.Up Adjustable Deck Pedestal System. The Bison Level.Up Deck Pedestal System provides a new way to build ground level and low profile decks by eliminating the need to install concrete footers. Level.Up Slope Leveler corrects sloped surfaces that are not level during the deck building process. Each Level.Up Slope Leveler compensates for up to 1/4 in. per foot slope (2%) and levels the base of the adjustable pedestal. Adds 1/4 in. to the overall pedestal height. Stack up to four slope levelers under one pedestal base to compensate for a maximum of 8% slope. To use, place with the smooth side down under the base of the pedestal and finger tabs pointing downhill. Made of engineered polymer and is weather and freeze resistant for lasting durability.