Harvey terminal housing or pivot lock shoe

Hello,

Your photo reminds me of the 15-208 pivot shoe but you would need to remove yours from the window to confirm if the specifications shown on our product page match up to yours. 

We also carry the 75-069 jamb spreader set but we only recommend these to professionals who do this type of work often since they are quite expensive and not eligible to be returned. For homeowners, we recommend following the cutout method shown in the video below. Thank you!