What this trim covers
The AF76SN is a panel board front trim from the A Series, sized at 76.500 in tall by 20 in wide. It mounts on the surface of the enclosure and carries a NEMA 1 rating for indoor, general-purpose locations where drips and falling dirt are the main concern. The trim includes a nameplate, so the panel ID is already on the door — one less item to order separately.
NEMA 1 enclosure fit
NEMA 1 means this trim is for indoor use only — no gasketed seal against hose-down or rain. It keeps out incidental contact with live parts and falling non-corrosive contaminants. For a dry electrical room or a climate-controlled manufacturing floor, it's the standard choice. Surface mounting means the trim fastens directly to the panel enclosure wall; no flush-mount cutout is needed.