This jalousie operator by Prime-Line Products is constructed of diecast materials and comes in an aluminum painted-finished. The mounting holes are spaced apart at 4-3/4 inch or 3-7/8 inch on center. It is a reversible non-handed design that can be used on either left-hand or right-handed installations. The link arm is 3-1/2 inch long (center to center), and it comes with a matching crank handle that fits the 5/16 inch spindle. Used by many manufacturers.
This louver operator is constructed from die cast and comes finished in aluminum. It features a crank in the center position with a 3-1//2 in. link. The universal design replaces most louver operators.