45 X 53 Extension Right Studded | Clear .200 Inch Vinyl NonStudded Standard Chair Mat | Black .125 Inch Vinyl They also need to equal

They also need to equal the measurement entered into Side B

They also need to equal the measurement entered into Side B

The sum of the measurements entered into Sides J H F & D must equal the sum of the measurements entered into Sides L & N

They also need to equal the measurement entered into Side A

45 X 53 Extension Right Studded | Clear .200 Inch Vinyl NonStudded Standard Chair Mat | Black .125 Inch Vinyl They also need to equalNeed help measuring? Click here to be taken to a tutorial video. Make sure sides A & B are not larger than the material's sheet size. The sum of the measurements entered into Sides C & E must equal the measurement entered into Side B. The sum of the measurements entered into Sides D & F must equal the measurement entered into Side A. The Breathe Through Option Chair mats create a great surface to roll on, but when a chair mat is placed on a carpeted