Truth casement and awning window operators

Hello there. For the casement operator, start by considering our 39-171. Compare the diagram below with your old hardware and see if it matches what you have.

Dimensions for 39-171

For the awning operator, start by looking at either our 39-083 or 39-140. Compare their respective wingspans with your old mechanism and let me know if either match what you have. 

For all these operators, 39-114L can be used a crank handle. It is sold separately.