Add-A-Level Work Platform from AliMed can be assembled to the desired height using patented “Stacker” and Poly-Clip” system to fit any floor plan. Flow-through grid permits scraps and liquids to drain through. Impervious to oils, gases, acids and most chemicals, the matting is made from strong, durable, high-impact plastic and snaps together easily.AliMed, Inc., Dedham, MA.