The 880 GPF and the 880 GPR are designed to be used as instrument mounting plates or cable entry plates. The instrument mounting plates (880 GPF and 880 GPR) permit standardization of the enclosures. Users can have the same enclosure with the same cut-out for the instrument plate. When different instrument cut-outs are required, the user can pierce the instrument plate or order them precut from the factory, thus avoiding manipulation of the complete enclosure, which can cause damage and is more time consuming. The instrument panels can be used in conjunction with the NEMA 4 window kits (880 HWK, 880 HWKV, 880 HWKL,880 HWKO, 880 HWKOB, 880 HWKOL), when the installation requires NEMA 4 protection but the instruments are not rated for NEMA 4. If the need is to install instruments that are deep, the recessed instrument plate available at 2” or 4” deep can be used. The extra deep window kit (880 HWKL) offers extra space for protruding knobs or pushbuttons.