You can see numbers on arms I believe they are Caldor windows
2 Replies
Bob from SWISCO
Jun 14, 2026 2:31 pm
Start by comparing to the 39-155 and 39-156 Dual-Arm Operators. Let us know if any dimensions listed differ in any way. For new covers and handles, see the 39-107 and 39-114L.
Dimensions for 39-155
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