window cranks

Question

Please advise if you have these exact systems for replacement.
Long arm is 9 1/2 ". Crank base is 4" wide and 1.5 " deep.
Need it for left opening window as well as right opening window. ( Pict.# 2916, 2917 ). Part # 20810

The 3rd window are pict. #2918, 2919, 2920. (9 1/2" long arm. Base5")

Bob · Accepted Answer

For the straight-arm operator, see if the 39-027E and 39-028E matches up. For the dual-arm operator, see our 39-031 & 39-032, or our 39-155 & 39-156. Compare all the dimensions, including the arm dimensions, to see if either set matches up.