Rockler Pro Plate router table insert. 
The router table insert is made for the following routers: Dewalt DW621 and 621K, Craftsman Standard, Freud FT 1700E, and
Freud 1702 VCEK.  (This is group B of Rockler router table inserts.)
This router table plate inserts measures 8 1/4" x 11 3/4" x 1/4" and is made of aluminum.
There is also two Rockler router plate inserts one is 1 1/4" and the other is 2 1/2"
If you have any questions, please ask.