These are all the accessories needed to complete your radon fan installation. 1). RadonAway® Easy Read Manometer 6.5" (for GX5A) 2). 6' Power Cord with Bushing 3). 4" x 4" White Spruce™ Flexible Coupling (quantity 2) 4). 3 Ceiling Flange ANTCF-38 3/8" Aluminum 5). 3 Swivel Ring Hangers - Pre Galvanized - 4" 6). 3 Zinc Plated Threaded Rod - 3/8"