Measurement Diagram:

Architectural Specification:
Towel bar shall be type-304 stainless steel with satin finish. Towel bar shall have 18-gauge (1.2mm) wall thickness and 1" (25mm) outside diameter. Clearance between the towel bar and wall shall be 1-1/2" (38mm). Concealed mounting flanges shall be 11-gauge (3.2mm) thick stainless steel plate,2'' x 3-1/8'' (50 x 80mm), and equipped with at least two screw holes for attachment to wall. Flange covers shall be 22-gauge (0.8mm) stainless steel,3-1/4'' (85mm) diameter, and shall snap over mounting flanges to conceal mounting screws. Ends of towel bar shall pass through flanges and be welded to form one structural unit.