60 X 96 Extension Right Studded | Black .145 Inch Vinyl Extension Left Thickest Chair Mat | Clear .250 Inch Vinyl The sum of the measurements

The sum of the measurements entered into Sides D F & H must equal the measurement entered into Side B

Make sure sides A & B are not larger than the material's sheet size

it has no way to escape so it sits under the chair mat until mold starts to grow

They also need to equal the measurement entered into Side B

A beveled edge can be useful when you need to transition smoothly on or off a chair mat

60 X 96 Extension Right Studded | Black .145 Inch Vinyl Extension Left Thickest Chair Mat | Clear .250 Inch Vinyl The sum of the measurementsNeed 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