The 1555AFPL is a galvanized steel inner panel made for the 1555AF size of flanged enclosure, which covers the ABS 1555AF22GY and the polycarbonate 1555A2F22GY. It gives builders a flat metal plate to mount small components or boards inside these 52 x 50 x 40 mm enclosures instead of fastening directly to the plastic.

The panel measures 41 x 40 x 2 mm (1.61 x 1.59 x 0.07 in) per its part data; the panel drawing gives 41.00 x 40.50 mm with a thickness of 1.61 mm [.06 in]. That footprint matches the enclosures' listed maximum P.C. board size of 41 x 40.5 mm. Material is listed as mild steel, described as galvanized.

On the enclosure drawing the panel is shown as a steel panel ordered separately, and the enclosures' molded standoffs are designed for #4 x 1/4 in self-tapping screws; the matching plated screw is listed as 1555TS100. Hammond notes that the 1555F enclosures can be factory modified (milling, drilling, printing) on request.

The 1555AFPL is RoHS and REACH compliant and has a shipping weight of 0.04 lbs (0.02 kg). Pair it with the 1554AGASKET replacement gasket and SC576-50 cover screws when servicing a 1555AF size enclosure.