Abstract: A boat lift is arranged to include spaced rectilinear frameworks having leg members splayed exteriorly of a first framework extending to the second framework. The legs may optionally include telescoping extensions, with the extensions and legs having foot plates for mounting the frameworks to a support surface. Flexible webs are mounted at opposed ends between the frameworks to position and lift a boat therebetween.

Abstract: A shielded door assembly for a generally rectangular opening in the electrically conductive wall of a grounded building has an electrically conductive frame secured to the wall along three of the sides of the opening. A tubular frame is secured to the first frame along the three sides thereof. An electrically conductive threshold having a non-interrupted contact surface is secured to the tubular frame at the remaining side of the opening. An electrically conductive door stop is secured to a first edge of said tubular frame and extends outwardly therefrom and cooperates with the tubular frame and the first frame for defining a pocket. An electrically conductive tubular door rim is pivotally secured to said first frame and is adapted for pivoting between an open and a closed position.