Depth measurements of the 18-009

A home owner from Florida says:

date: 05-22-09

I have selected the 18-009 top sash guide for Kinco non-tilt windows. Depth seems to measure 8/16' instead of the 11/16' in sketch. All other dimensions match. Do i have the right part?

date: 05-26-09

Make sure you are measuring the correct depth. I had the profile of the 18-009 photographed with dimensions so that the dimensions are more clear. The very top depth, the cap, is 11/16". The depth directly below the cap is 5/8". The smaller depth near the bottom of the sash guide is 3/8".