37. Furnish one separator having a cubic contents of 4.5 cu. ft. for each sweeper of plant capacity.
38 to 56. Same as for Class 1.
56a. Tool Cases. Furnish approved hardwood cabinet-finished cases for cleaning tools. Each case to be made as light as possible and of convenient form for carrying by hand and provided with a complete set of cleaning tools, each securely held in its proper place, and fitted with lock and key, clamps, and conveniently arranged handles.
57. Each case shall contain the following:
One carpet renovator ¹⁄₂ in. by 15 in.
One bare floor renovator, 15 in. long, with curved felt-covered face.
One wall brush, with skirted bristles, 12 in. long and ¹⁄₂ in. wide.
One hand brush, with hose connection at end, 8 in. long and 2 in. wide.
One 4-in. round brush for relief work.
One upholstery renovator.