truth casement operator

Thanks for reaching out! It is difficult to tell, however, it does appear that you have the 39-031 casement window operator. To confirm you'll need to compare the dimensions shown below to your existing operator. The opposite handed version is part 39-032.

Dimensions for 39-031

These are compatible with the 39-107 cover as well as the 39-114L standard crank handle or the 39-205 folding handle. There is also the folding handle and operator kit, part 39-107FK. All of these are compatible with the recommended operator.