Old Style Casement Operator Replacements - Mounted Under Sill Stop

Entry-Gard, Old Style Casement Operator Replacement Unit Part, EG-RFPI-LR - REPLACES THE OLD STYLE UNITS - this install under/thru the wooden Sill Stop (Removable Wood Bottom Sill Piece ) 

Specify LEFT or RIGHT handing @ checkout in the comment section. SEE PICTURES.