What anchors are used in FEMA Tornado Resistant openings?

The following anchors are approve for use in FEMA Tornado Resistant openings

  • Masonry walls:
    • Jamb anchors - Wire masonry anchors
    • Sill (base) anchors - Adjustable base anchors
  • Existing walls:
    • Jamb anchors - Butterfly, Hat spacer or Tube & strap existing wall anchors
    • Sill (base) anchors - Use an existing wall jamb anchor 


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