21.5 inches

3M Anti-Glare Filter for 21.5″ Monitor 16:9 Touch Compatible AG215W9B

Lap Gear Lap Desk Bamboo Top Good Used Condition

21.5 Inch Touchscreen Monitor VA Panel FHD 1920x1080P, 3000:1 Contrast, 100%

Targus 4Vu Privacy Screen for 21.5″ 16:9 Widescreen Monitor Anti-Glare+Blue Edge