Comments by "John Burns" (@johnburns4017) on "The Invention that Accidentally Made McMansions" video.

  1.  @chir0pter  wrote: "subfreezing temperatures occur at sea level in the tropics." Where?
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  2. The TJI (Masonite) "I" bean has made a big impact since the nail plate, is that they cover a span of about 42 feet.
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