Porta Screen Trays have 14x14in screen area and quickly secure for operation by dual hand clamp levers. Release the levers to individually remove trays for convenient emptying, cleaning, and weighing operations. Mesh sizes No.4 and larger have metal shields around edges to cover partial openings for accuracy of separations. Trays with wire cloth in the No.16 to No.80 range have three added support ribs. No.100 and finer trays are supplied with backup cloth support. Replaceable mesh is available in all sizes. Cloth No.4 and larger is steel; fine mesh is stainless steel. Trays measure 16″W x 16.5″D x3″H. All porta screen trays meet ASTM D 4749, E11, E 323 and AASHTO M 92.
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