This Bi-Level Support Bar by Astro-Physics is designed to be used with AP accessory trays for 6, 8, and 10-inch diameter pier posts. The Bi-Level Support bar attaches to the holes at the top of the pier post and can hold 2 trays, one above the other. It measures 8" long and 1.75" wide.
This support bar can be used with 32", newer 42", 48", 54" and 62" Astro-Physics Portable Piers. The struts interfere with its use on 24" and older 42" piers. The newer 42" models have added holes below the eyebolts for attachment of the support bar. Owners of the older 42" piers can modify their older piers to accept the TRAYSB as well. It will also work with the 6" Eagle Folding Pier in some, but not all, of its height configurations.