looking for a right hand casement operator. the numbers on them are OP05-7553-03 with a time stamp of 10/17/03 15:19:47. on the arm
op052020
Paul from SWISCO responded:
May 21, 2015
When I cross-reference those numbers, I see our 39-329 and 39-330 operators pop up on more than one occasion. Carefully compare them to your own hardware to confirm that they're the same.