Please review all information below. Please contact us prior to ordering if your smoker build date is older than February 2015, as the shelf may require customization. The BBQ Slidin’ Shelf Kit w/ Drop In option for the Yoder YS640 includes the shelf, frame, spacers and an expanded metal drop in insert. There is 4“ of clearance between the top of the slide shelf and the bottom of the top shelf. Please watch our demo video and feel free to contact us with any questions. The kit is also available with a standard expanded metal shelf, part number SSK640. These will be built to order. Shipping and handling will be calculated at checkout. Please allow 1-2 weeks for build time. Please note, as demonstrated in the video, the standard grill grates drop in going left-right vs front-back. This is by design to work without any cutting or modifications to the standard Yoder Grill Grates. When sliding the shelf out always be cautious of grease dripping or collecting. Disclaimer: Shelf should be washed with soap and water and properly burnt in and seasoned before use. Weight capacity of the shelf is 60lbs. Edges may be sharp and the shelf will be hot when in use so use caution. Height difference of the cooking surface is approximately 1 1/4”, so cook times may vary.