PIERCE AND DIMPLE FRAME

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The following are quantities of EMA anchors (pierce and dimples) based on range of frame height:  Quantity  Nominal Frame Height     2     1'...
No, an adjustable base anchor is not supplied on frames with existing opening anchors. The anchor design for use in existing masonry walls, is a pierce and dimple in the frame soffit for 3/8"...
Wallboard must penetrate a minimum of ½” into the hollow metal frame, based on NFPA Pamphlet 80, (page 80-2, figure A.4.6.3.1) .