#7303 - LGTH: 27 1/4" - HDR: 6 5/8" wd. 4 7/8" dp. - 19 lbs.

Orion Bus cross-flow frame

Each flange has 9 holes- three tapped 5/16" NC threads and six drilled for 5/16" bolts.  One side has four 5/16"NC threads @ 6 1/4" centers, the other side has five5/16" NC threads.  Two gussets have a 5/16" NCnut.  The back of the channel has eleven 3/8" NCthreads - two groups of 4 and one group of 3.
Note:   matches tank #7405 & #7406