46pcs Transition Edge Kit, Black
Forty edge pieces at twelve inches each is forty feet of finished border, and six corners is enough for a rectangle with two to spare. That arithmetic is the whole decision: a six-by-six tiled square has twenty-four feet of perimeter, so one kit finishes it with room left over, while a long garage run of open edge can swallow two. Each strip is 2.4 inches deep and 0.65 thick, which matches the tile height and turns a step into a ramp.







