24-inch wide x 66-inch high, 1-section Add-On w/Hinge (old A5-1) 66-inch high A2466 CSP are great for isolating drums, cymbals and other instruments mounted higher than 48 inches. The A2466x1 is commonly used as an ‘add-on’ to increase the width of an existing A2466 system by 24 inches. 12-inch and 18-inch AX Height Extenders are available if more height is desired.