A:
The filter fits snug inside the frame of the viewing screen, which must measured diagonally at 17". Diagonal measure is from top inside corner to opposite bottom inside corner. The screen itself is measured at 9 1/16th H x 14 7/16th W.
If you have questions about measuring your screen or selecting the correct filter size, please call 3M toll-free at (800) 553-9215. (Monday through Friday, 7:30AM to 5PM CT)
Answered on 3/9/2011 by Darlene S from Staples