Check the listing for details. Reliance K2F10 8 and 10-Circuit Flush Mount Transfer Switch Accessory Kit. Width: 18, Condition: New. Listed at 54.99 USD. Features Adjusts to wall thickness Decorative trim plate is paintable Good for all indoor 8 and 10 circuit pro/tran 2 models (with any suffix): 308, A308, 310, A310, 508, A508, 510, A510 Works with any current pro/tran 2 model (8 or 10 circuits) with 1 in. circuit breakers What's in The Box Transfer Switch Flush Mount Steel Mounting Brackets (1) 24-Inch Conduit Straight Fittings Trim Plate Hardware Owner's Manual Warranty 30 Day Satisfaction Guaranteed Specifications Sku K2F104.6 Brand Reliance Controls Compatibility Indoor 8 and 10 Circuit Pro/Tran Transfer Switches Length 13.5 in. Width 17.5 in. Height 2 in. Product Weight 3.75 lbs. why buy from us? secure & hassle-free shopping All items are covered by manufacturer warranty. fast shipping Most orders delivered in 1-3 business days. customer service Call us toll free: 1-800-629-3325 satisfaction guaranteed All our sales are backed by a 30-day satisfaction guarantee.