12” x 21” Extracts about 1,200 sq. ft. per hour ?" thick clear acrylic top plate for viewing extraction results Vacuum release to prevent suction lock-down when stronger vacuum systems are used Angled metal vacuum flange helps keep hose out of the way and accepts 1" or 2" hose cuffs Upright handle adjusts to variable heights and detaches for easy storage All metal parts are stainless steel, zinc coated, or powder coated Polymer materials are impervious to water Clear acrylic top plate is highly resistant to chemical damage