LS151.12 | Difference Between Floor, Floor/Ceiling, Roof/Ceiling, and Roof Assembly?

1.0 video LS151.12 | Difference Between Floor, Floor/Ceiling, Roof/Ceiling, and Roof Assembly? 960 540 iPlayerHD https://iplayerhd.com <iframe src="//iplayerhd.com/player/video/07537b00-0310-4d9b-a1d7-874d8a6c8f53?cbartype=over" allowtransparency="true" frameborder="0" scrolling="no" allowfullscreen mozallowfullscreen webkitallowfullscreen oallowfullscreen msallowfullscreen width="960" height="540"></iframe>