Size: 2 x 4.25 x 0.2"
ArcOne Tradesman Auto-Darkening Filter 2-Inch x 4-1/4-Inch x 2-Inch - Horizontal is an economical, general use auto-darkening filter. Great for the do-it-yourselfer and home hobbyist. This 2X4-inch filter has a light state of 3 and single shade 10.5.

Light state 3, Dark state 10.5
Two independent sensors
Economical, general use filter
Dimensions 2-Inch x 4-1/4-Inch x .2-Inch
Viewing Area 5.25-Inch