19-1/2 in. X 15-1/2 in.; padded in top and bottom per dwg 5206511 and 5206512
No other part numbers with same form, fit, and function found.
NSN 6135-01-041-3829
NSN 6320-00-036-3688
NSN 7035-00-206-6123
NSN 5985-01-005-4331
NSN 5999-01-056-6862
NSN 5975-00-228-7967
NSN 6240-01-512-1856
NSN 5935-00-590-9017
NSN 5835-00-764-4388
NSN 4140-01-400-0643
NSN 6150-00-948-1797
NSN 6150-01-485-7659