The Vanco RKSHLF-KIT Adjustable Rack Shelf Kit is a vented 19-inch rack shelf built from 16-gauge steel in the USA, designed to organize and secure multiple AV extenders and similar gear with a 30 lb weight capacity. It includes 4 mounting brackets that accommodate equipment up to 2.25 inches wide, with a black textured powder-coat finish and a 17.5 x 7-inch shelf surface that promotes airflow to reduce heat buildup. Additional mounting brackets (RKSHLF-2MB) are sold separately, and the kit is TAA compliant.