Steel City 4 SQ Raised Switch Cover, 2-Toggle

Both are 4 inch square raised covers with two toggle switch openings. The RS5-10L is the L (Standard) cover style and the RS5-10R is the R (Box Mount) style. Pick the one that matches how you are mounting to the box; the plaster ring geometry is the only difference in the ordering choice between the two.

The Steel City RS5 raised switch cover adds 5 cubic inches of volume. That counts toward your total box volume when you are tallying conductor fill, so it can be the difference between a compliant 4 square box and one that is over-filled with two switches and travelers in it.

Yes. The cover is punched for two toggle devices, so a pair of standard single-pole or three-way toggles mounts side by side on a single 4 inch square box. It is a raised device cover, not a blank or a duplex receptacle cover, so it will not accept decorator/rocker style devices.

It is pre-galvanized steel with a silver finish, which is the standard interior commercial/industrial dry-location cover. Pre-galvanized steel gives corrosion resistance for normal indoor exposure, but it is not a gasketed weatherproof cover, so do not use it for wet locations or direct outdoor exposure.

Use a raised cover like the RS5 when the box is set back from the finished wall surface or when you need the extra device room and volume; it brings the switch faces out flush with the wall and adds 5 cubic inches of usable box volume. A flat cover is for boxes mounted flush on an exposed surface where no depth correction is needed and no added volume is wanted.

Country of origin on the RS5 raised switch cover is the United States, which is what government, education, and institutional specs with domestic content language typically ask for on electrical rough-in materials.