The AF49SDN is a panel board front trim from the A Series, sized at 49-1/2 inches tall by 20 inches wide — the physical cover that closes out the front of a matching panel board enclosure. The front-hinged design and included nameplate mean it swings open for access without removing the trim, a detail that matters when the board is mounted in a tight row of gear. NEMA 1 rating limits this to indoor, dry-location installations where falling dirt and incidental contact are the only hazards. No gasket, no weather seal — spec it into a conditioned electrical room, not a washdown or outdoor site.
What the Dimensions Mean for Fit
The 20-inch width and 49.500-inch height are the trim envelope — the panel board cutout and mounting hole pattern must match these dimensions. A common gotcha: the trim is 49-1/2 inches, not 48 inches; verify the backbox opening before committing the order. The A Series family shares a consistent mounting footprint across trims of the same size, so swapping within the series is drop-in if the height and width match.