Crossbar, Rectangle Tube

CB(NW)RT(OPT)-(ND)
CB….. Crossbar
NW…..Nominal Width 3′ or 4′
(914 mm or 1219 mm)
RT….. RT=Rectangle Tube
OPT….. 12=1″x2″ (25 mm x 51 mm)
13=1″x3″ (25 mm x 76 mm)
ND…..Nominal Depth
02″ to 12″ in 2″ increments
(25 mm to 305 mm in 25 mm increments)