Determining the height and width 1.
How to know what size screen door.
If your old patio screen door is available simply measure the length and width outside edge to edge and give us those measurements.
If your previous spline s length is still intact use it as an additional guideline while cutting the spline to size.
Extend the tape measure from the sill at the bottom of the inside of the door frame to the top inside of the exterior door trim.
How to measure for a screen door.
Measure from the bottom of the sill to the underside of the top frame.
Measure all 4 interior sides of the screen with a tape measure and record the length.
Take three measurements one across the top middle and bottom of the door a b c.
A door is square if it is level and even as opposed to square in shape.
Measure the frame s width in.
Record the narrowest dimension.
Record your measurements and take them to your nearest larson dealer.
How to measure for a screen door measure the door from the bottom left corner to the top right corner and then bottom right to top left corner.
To get the door s height measure from the bottom of the sill to the underside of the top of the frame.
Cut the new spline to size.
Measure the opening width horizontally as shown below.
Extend the measuring tape within the door frame from one side to the other about 6 inches from the top.
Place the end of the tape at the bottom inside.
Use scissors or a sharp knife to cut your spline to the same length.