For a certainteed window
With spiral balance
Blue insert for sash pivot
Right and left side needed
Spiral window shoe
1-3/8 wide
2-3/8 length
5/8 thick
If the shoe is indeed 5/8" thick, then the 15-047 would be the right choice; but double-check to be safe. We have no pivot shoes that are 1-3/8" wide; 1-1/4" seems more likely. Also consider the 15-118.