Fitment - for 2010-2014 Chevy Avalanche/Suburban - fits crown style not the rounded molding *Model changes in middle of year 2009 so the stock molding width changes from 3.5" to 4.25" wide. Only fit over the factory 4.25" wide plastic molding. * Can not 100% fully cover the factory base molding on your truck. Base wider factory plastic moldings (same color as your truck) are not included for sale. Front door measurement should be 42 7/8" ............ between end caps Rear door measurement should be 34 1/8"............. between end caps Yours could be different as the mouldings are sometimes cut different at the factory. Pieces - 4 pieces. 4.25" (=4 1/4") wide top sticker accent. Install onto/over the factory body side molding as an overlay. Will not work on flat body side. Material – 304 stainless steel, 24 gauges (about 1/32") thickness with beveled edges. It is NOT the factory replacement. Installation - Full 3M tape on the back, just peel and stick over factory plastic molding as an OVERLAY like using a sticker. Warranty - Life time warranty against material defect. No warranty for installation error. Country of Manufacture - Made in USA Shipping - UPS ground shipping from California and 2 days for handling. Will email tracking info once shipped. Return and refund - You may return unused parts within 15 days after delivery and buyer pays for return shipping fee. Please send the return tracking info immediately. Your return tracking number will be your RMA number. Will refund within 5 days after delivery. Caution - Make sure the surface is clean before installation. Test fit before installation. Once used, we can not take it back for resale.