Professional inflatable safety board to keep doors open during repair, maintenance or inspection service with none of the awkward, stooping, bending or kneeling with adjustable heavy duty metal latches VERSATILE 1 INCH GAP SPANNING CAPACITY Means it's completely adjustable and works on a wide range of center or side opening doors including misaligned, dented or bent doors with larger than normal gaps Easy to use with a juicer pump and precise bleaching valve, it inflates quickly and leaves your hands free to work. The soft and durable cover leaves no damage or marks on surfaces and folds to fit comfortably in your pants or shirt pockets. 150 lbs load load secure handles for windows, applications, or partial installations with just a single installer that saves lab time and costs The rounded and internal corner pins are keys to insert into 3/32 inch narrow gaps and its 3 x 6 inch surface will not bend under pressure on narrow loads. Covered by 1-year warranty.