The AF49SN is a panel board front trim from the A Series, sized at 49-1/2 inches by 20 inches, designed for surface mounting on electrical panel boards in indoor commercial or industrial settings.
Rated NEMA 1, this trim provides basic indoor protection against incidental contact with live components and falling dirt — suitable for dry, clean environments like electrical rooms or control cabinets where washdown or outdoor exposure isn't a factor. Surface mounting means it attaches directly to the front of the panel board enclosure; no flush-mount cutout or recess is needed, which simplifies retrofits in existing switchboards where the trim is a direct replacement for the same A Series footprint.
Because it's a standard A Series trim, it's a broadly stocked spare for panel builders and MRO planners who keep a min/max level on common trim sizes to avoid line-down situations when a damaged front needs swapping out same-day.
What the Key Specs Mean for Your BOM
The 49-1/2" x 20" dimension is the trim's overall width and height — it must match the panel board can opening. Measure the existing trim face before ordering; the A Series uses consistent mounting hole patterns across this size, so a direct swap is the expected case. The AF family/style designation (AF) identifies this as part of a specific trim profile and hinge/latch arrangement within the A Series line. If your existing panel uses an AF-series trim, the AF49SN is the correct form-factor match; mixing AF with a different series (e.g., AN or AR) would require verifying latch alignment and trim overlap.