Abstract: An adjustable portable saw support, device, assembly, unit, kit, or the like or table or bench formed of spaced metal triangular shaped base units, a cross support or brace which supports a chop saw, radial arm saw, miter saw, or the like, and can have elongated 2".times.4" or 2".times.6" legs secured to each of the base units like a sawhorse. Without legs, the base units can rest in the bed of a pickup, on a tailgate, or on a floor. With legs added thereto, the unit can be raised to any desired height. The portable saw support may be used without a saw as a work table or lumber support surface for use with a hand held drill, circular saw, router, or other power or hand tools. Swing arm supports can support, for example, a plurality of 2".times.10" or 2".times.12" members or lumber laid adjacent one another to provide a large working surface. Each base unit can include an adjustable horizontal end brace or support member which can support one or two 2".times.

Abstract: A vent for conducting gas from the atmosphere to a space of a container, the vent comprising a manifold engagable to the container in gas communication and a breather intake assembly engagable to the manifold in gas communication and having a valve assembly operative for admitting ambient air into the container when subatmospheric pressure is present within the container.