These Hale pet door models are for use with windows up to 60". If your window is larger, you may want to consider the Hale Patio Panel Pet Doors.

Hale Omni Vertical Sash Pet Door:

1. Determine the overall width "A" of the window measured in the sliding track from the inside of one vertical window track to the inner face of the opposite vertical window frame. Please measure carefully.
2. Measure the width of the track "C" that the window slides in. If it measures 7/8" or greater, our standard Omni insert will fit.
3. The location of your pet door refers to which side of the window you want your pet door installed on. From inside your house looking out, please choose either left side or right side.

Hale OptiView Vertical Sash Pet Door:

1. Determine the overall width "A" of the window frame measured in the sliding track from the inside of one vertical window track to the face of the opposite vertical window jamb. NOTE: if you are ordering our double model and the width of your window track "C" is narrower than 7/8" or the single model and the width of your window track is narrower than 11/16", you cannot order an OptiView model. Please choose one of our other window models. Please measure carefully.
2. The location of your pet door refers to which side of the window you want your pet door installed on. From inside your house looking out, please choose either left side or right side.

Hale Spring Tech Vertical Sash Pet Door:

1. Determine the overall width "A" of the window measured in the sliding track from the inside of one vertical window track to the inner face of the opposite vertical window frame. Please measure carefully.
2. Measure the width of the track "C" that the window slides in. If it measures 7/8” or greater, our standard SpringTech insert will fit.
3. The location of your pet door refers to which side of the window you want your pet door installed on. From inside your house looking out, please choose either left side or right side.