Notrax The M.D. Ramp System (FR) is a fire retardant ramping system that is designed for use with the Cushion-Ease family of floor mats., The addition of this product creates a beveled edge for easy access onto or off of the work platform. All ramp lengths fit the malefemale interlocking system on Cushion Ease floor mats. This product is beveled and molded with mitered corners and a protruding tab that locks together the two adjoining ramps for a secure, professional corner. Square edges can be achieved by trimming off the miter using the cut line on the bottom of the ramp.