Large Contour Mat | Clear .145 Vinyl Thick Standrad Chair Mat | Black .145 Inch Vinyl The sum of the measurements

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

This problem also arises when the air conditions are very humid

The Breathe Through Option

you have the potential for a serious problem

Large Contour Mat | Clear .145 Vinyl Thick Standrad Chair Mat | Black .145 Inch Vinyl The sum of the measurementsThe Breathe Through Option Chair mats create a great surface to roll on, but when a chair mat is placed on a carpeted area, where the concrete under the carpet was not properly sealed or has no moisture barrier, you have the potential for a serious problem. This problem also arises when the air conditions are very humid. The moisture under the mat is trapped, it has no way to escape so it sits under the chair mat until mold starts to grow. The carpet