ALP

Accurate Measurements Begin Here

Measure once. We'll build the rest.

Getting the correct measurements is the first step toward ensuring your ALP® Lockdown Shade provides complete classroom door window coverage. Whether you choose one of our standard sizes or a custom-sized solution, accurate measurements help us recommend the correct shade for your classroom.

Measurement diagram showing width and length guidance for classroom door window.

HELPFUL HINTS:

  • A steel measuring tape is much more accurate than a cloth tape.
  • Always put your width measurement first and length second (W x L).
  • All shades are available in standard and custom sizes. We can make your shades to fit the exact measurements you need.

Measure the Glass Only

Measure only the glass portion of the classroom door window.
Do not include the surrounding frame or trim.

Recommended Finished Shade Dimensions
Width: Measure the glass and add 3 inches.
This allows the finished shade to cover both the glass and surrounding frame, helping eliminate visibility around the edges.

Length: Measure the glass and add 5 inches.
The additional length allows the shade to fully cover the viewing area while providing room for the industrial-strength adhesive strips at both the top and bottom of the window.

Measuring the width of a classroom door window.

Step 1

Measure the width of the glass only.
Add 3".

Glass Width + 3" ──────────── Equals Finished Shade Width
Measuring the length of a classroom door window.

Step 2

Measure the length of the glass only.
Add 5".

Glass Length + 5" ──────────── Equals Finished Shade Length
Person demonstrating ALP lockdown shade on a classroom door.

Before You Order

Before selecting a standard or custom-sized shade, make sure there are no obstructions that could interfere with installation or deployment.

Check for:

  • Door handles
  • Safety bars
  • Hinges
  • Closers
  • Other door hardware

If you're unsure whether your window configuration requires a custom-sized shade, our team is happy to help.

Contact Us

Every classroom is different.
If your measurements don't match one of our standard sizes, ALP® can manufacture a custom-sized lockdown shade designed specifically for your classroom door window.