DYAD left hand casement window operator

Question

Arm marked 30866 and has 4.500: hole spacing, with 5.00" OAL. Base unit has 5" mounting hole spacing. Looks like the 39-188?

Bob · Accepted Answer

Thanks for posting. I agree, the 39-188 looks promising; just make sure that the length of the link arm matches up. Let me know if it differs at all.