In vertical wall penetrations, weatherproofing cable trays is often carried out using a weatherstop sealing system. Cables, cable bundles, conduits, bundles of conduits, empty pipes, cable trays and cable ladders may also pass through penetration seals in walls and floors and should be taken into consideration during all phases of design and application. Other factors such as how the building is constructed, exposure, and how many cables there are. Where cables pass through shafts, walls, slabs, or enter electrical panels or cabinets, openings shall be tightly sealed with firestopping materials in accordance with. WSP weatherstops are designed to seal penetrations of any type in walls or floors by cable tray, cable conduit, pipe and/or bus duct. The WSP system utilizes a powder coated or galvanized steel frame that encompasses the entire tray or duct at the point of penetration.
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