If you need to move your gym floor in and out of your space on a regular basis, this maple flooring might be for YOU! Unlike most of the gym floors we see, which are cut out, these have nice clean edges and a "lock together" system on the edge of each panel. Plus the ends match up with every other two boards being offset. The panels are mounted on a 1/2" thick sheet of OSB, which has 1 1/2" high sleepers underneath it. If you were to put this on a concrete slab, it would raise your floor about 2 3/4". This slab is painted all forest green and features bold white text politely suggesting "Goo".