The 1555RFPL is a galvanized steel inner panel made for the 1555RF size of the 1555F Series flanged enclosures. Panel builders and OEM engineers use it as a flat mounting plate for components inside the enclosure instead of fastening parts directly to the plastic.

The series ordering table assigns the 1555RFPL to the four R-size enclosures: 1555RF17GY and 1555RF42GY in ABS, and 1555R2F17GY and 1555R2F42GY in polycarbonate. Those enclosures measure 6.30 x 6.30 in (160 x 160 mm) not including flanges, in 38 mm and 63 mm heights.

The panel measures 5.87 x 5.83 x 0.06 in (149 x 148 x 2 mm). The drawing dimensions it at 149.00 mm [5.87 in] by 148.00 mm [5.83 in] with a 1.63 mm [.064 in] thickness, R8.00 mm [R.31 in] corners and a 1.00 x 45.0° chamfer. The series notes that the enclosures have molded standoffs for a PC board or inner panel designed for #4 x 1/4" self-tapping screws (part number 1555TS100).

The part page lists the material as steel, category Accessories, type Inner Panel, and IP rating IP68. It is REACH and RoHS compliant, ships shrink wrapped and weighs 0.13 lbs (0.06 kg). The drawing notes the panel can be factory modified (milling, drilling, printing etc.) and that solid models are available in STEP or IGES.