This is a left-handed diecast casement locking handle with an offset base found on many contemporary casement windows (as viewed for the inside looking out). The mounting holes are positioned offset of the centerline down the base placing them closer to the window frame edge by 13/16 inch from the tip of the lock to the center of the mounting holes. This handle has an a white finish with mounting holes for the handle assembly and the keeper at 1-1/2 inch on center.
Used by many contemporary window manufactures
This contemporary design is similar to a Truth hardware design
1-1/2 inch on center mounting holes
Diecast construction with a white finish
Matching right hand casement operator is Prime-Line part H 3821
Mounting hardware included
A Phillips head screwdriver is required for installation
Please refer to the line art drawing for dimensions and compare with your original item before purchasing
Holes are drilled and countersunk for #10 flat head screws