The 1556CPL is a natural aluminum inner panel for the Hammond 1556 Series modern general purpose enclosures. It is the accessory panel listed for the 1556C (120 x 80 x 45 mm) and 1556CA (120 x 80 x 60 mm) enclosures in black, light gray and white, and gives OEM engineers and integrators a flat metal plate for mounting components, modules or a PC board inside the housing instead of fastening directly to the plastic.

Its nominal size is 111 x 71 x 2 mm (4.37 x 2.8 x 0.08 in), matching the 111 x 71 mm maximum P.C. board size listed for the 1556C and 1556CA enclosures. The drawing shows 111.00 x 71.00 mm with a 2.05 mm [.08 in] thickness and R8.00 mm [R.31 in] corner radii, so the panel follows the rounded interior of the housing.

The 1556 enclosures provide multiple mounting locations inside the lid and base that allow easy PC board mounting or can be used with Hammond aluminum panels such as the 1556CPL. Panels are sold separately from the enclosures. The panel ships in shrink wrap with a shipping weight of 0.08 lbs (0.04 kg).

The 1556CPL is RoHS and REACH compliant. Solid models are available in .stp or .x_t format, and Hammond can factory modify parts (milling, drilling, printing) on request through its modification shop.