NetShelter SX Air Recirculation Prevention Kit AR7708 By closing gaps between the vertical mounting flanges and the side panels of the enclosure, this kit prevents the recirculation of warm air exhaust inside the enclosure. Features Promotes Proper Airflow Physical Net Weight 0.56 lbs. ( 0.25 kg) Maximum Height 84.00 inches (2134 mm) Maximum Width 0.75 inches ( 19 mm) Maximum depth 0.75 inches ( 19 mm) Shipping Weight 1.27 lbs. ( 0.58 kg) Shipping Height 4.25 inches (108 mm) Shipping Width 9.63 inches (245 mm) Shipping Depth 20.75 inches (527 mm) Color Black Conformance Standard Warranty 2 years repair or replace