The HPE Aruba Networking AP-MNT-C mounting base, part number R3J17A, is designed for individual installation of indoor Aruba access points on flat 9/16-inch mounting rails with a C-type profile. It provides secure mechanical attachment, helps maintain the proper orientation of antennas, and supports clean and consistent ceiling mount installations for business and university applications. Compatible access point models include the AP-504, AP-505, AP-514, AP-515, AP-534, and AP-535. This is solely a mounting accessory kit and does not include an access point. The product is intended for professional indoor network installations where reliable mounting to ceiling rails is required.