Please check the Thumb lock position to your old Handle
How to check:
Look on the back of the inside Interior handle where the thumb latch passes through. There are 2 slots 1 marked "A" and 1 marked "B".
If "B" (Lower Latch slot) is where your Thumb latch passes through you have an Offset Latch.
If "A" (Upper Latch Slot) is where your Thumb lock goes through? You have a Center Latch and this handle will not work.
Here is the link for Sash Controls Center Latch products "center latch"