(Lot of 5): Heavy-Duty Commercial Industrial Slotted Steel Plates (for Conveyer or ???)

New, never installed.  Surplus stock from utility company warehouse.  Minor surface rust that will not affect operation.

Two lots of Five available.  Buy BOTH and save 10% off total, PLUS receive one free plate (11 total).

I am not sure what these are exactly.  JEA warehouse stock number was AQCPL033.  I am guessing the PL means Plate, and perhaps A is for ash and C for conveyer?

Each measures 25-3/4" L by 3.5" W by 0.5" thick.  The slot is 22-1/4" wide and measures 0.81" on front, and 0.55" on back.  Eight mounting holes 0.40" diameter.  Each weighs about 10 pounds.

If you can identify these parts, please contact me.  Thank you.