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Specifications

SEK series aluminum frames are made of high-tension/hardness aluminum alloy materials with standard of [Chinese National Standard of Screen Frames]. And all frames will be light, resist-tension, resist-chemical, clean easily.
Qualities
Outside Dimension：
   +/-0.04 inch
Square ness：
   +/- 2o
Flatness：
   Not to exceed 0.02 inch
Bow：
   Not to exceed 0.04 inch at standard tension with standard frames’ size
Finish：
   Grinded on both sides
Package：
   Plastic tape or cartons (For exporting)