#6714 - LGTH: 29 3/8" - 19 lbs. Top & Bottom Flanges: 6 1/4" w. X 10 3/4" dp.

Mack side frame

Each flange has 14 holes, 4 tapped 5/16" NC and 10drilled clearance for 5/16" bolts. Three 5/16" NCthreaded holes on each side of rail. (On one side theyare evenly spaced & one the other side they aregrouped close to one end.) Twelve holes on back ofchannel in 3 groups of 4. Eight of the holes are drilled11/32" and the other four have a 5/16" NC thread.
Note:  frames are not interchangeable. Order left fordrivers side or right for passengers side or pairs.