Effective March 2002, manufacturers of UL Listed "raintight" (wet location) compression type EMT fittings were required to comply with the more stringent follow up test requirements. If the manufacturers of these fittings did not comply with the new requirements, they were no longer authorized to mark their UL Listed fittings with the "Raintight" marking.
As of November 2003, only one manufacturer is authorized to mark their Listed compression type EMT fittings with the "Raintight" marking. Bridgeport Fittings Inc. has their 250 and 260 Series with an RT Suffix connectors and couplings in the ?, ?, and 1 inch trade size Listed for raintight applications.
These fittings are provided with additional sealing rings to exclude water, the installation instructions on the carton must be followed for proper installation. Look for the "Raintight" marking on the container and the UL Mark on the fitting.
The availability of "raintight" fittings may change as manufacturers redesign their fittings to comply with UL's new follow-up "raintight" testing. It is imperative to always look for the proper marking on the product and container. If the product is not marked with the UL Listing Mark and the container is not marked "Raintight", then the fittings have not been Listed for raintight applications. As new "Raintight" Listings are promulgated, this page will be updated with that information.