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The above guidelines are based on ASTM E330-90 test results on a new 7’ x 16’ rolled 26 gauge
sheet steel door (0.0175” thickness) with no windows and with an
estimated wind speed resistance capability of 70 mph. The same type
door installed according to manufacturer’s specifications and reinforced
with three Secure Door® braces withstood pressure equivalent to
180 mph
wind speeds in independent laboratory tests. Based upon engineer
calculations, a single door of the same specifications reinforced with a
single Secure Door brace will also withstand wind speeds of
approximately 180 mph. Engineer calculations for double door protection
(door specification as above) project that two braces in lieu of three
provides protection for wind speeds up to 165 mph.
Protection levels
assume correct brace installation. Individual consumer results will vary
with the age, size, condition, construction method, installation
technique, and material of the door to which the Secure Door braces are
attached
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