Professional flat frame monitor filter fits 19-21 crt

Professional flat frame monitor filter fits 19-21 crt Lessen eyestrain and headaches related to computer use with this monitor filter. Reduces screen glare by as much as 95%. Stops static charge and dust build-up when properly grounded (cord included). Meets American Optometric Association (AOA) specifications for VDT glare reduction. Just slip it on your monitor; no adhesives or mechanical attachments required. CRT Monitor Size Range: 19.00 in - 21.00 in; Minimum LCD Monitor Size Range: 19.00 in.