The adjustable foot JustiFix® JM is the height-adjustable spacer between decking substructure and foundation on solid ground. JustiFix® JM 60 is adjustable from 25mm-60mm, and is ideal for low profile decks where height limitations make the JustiFix® JK 90 less practical. It keeps the deck dry and well ventilated. JustiFix® raises the timber elements of a deck above ground level, allowing for proper ventilation beneath the deck, and avoiding the decay related concerns caused by timber in direct ground contact eg-posts. This results in a significant performance and durability benefit to the decking installation.