Specifications and site requirements Model PT Model PF with T-extension For Model PT blueprint, order 4731-T For Model PF blueprint, order 3507-T 15 ft. (4,572 mm) 15 ft. (4,572 mm) Pit Depth - 58 in. (1,473 mm) 61.625 in. (1,565 mm) 10 ft. max. (3,048 mm) Pit Depth - 58 in. (1,473 mm) 61.625 in. (1,565 mm) 10 ft. max. (3,048 mm) Minimum: 12 ft. 10 in. (3,911 mm) Minimum: 12 ft. 10 in. (3,911 mm) 18 in. (457 mm) 18 in. (457 mm) 34 in. (864 mm) 34 in. (864 mm) 20 ft. (6,096 mm) 20 ft.