Very important! Please read our detailed measuring guide under 'specifications' before placing your order. This slide-out shelf is custom-made to fit the measurements of your cabinet’s clear opening width and unobstructed interior depth. You will round down and select your closest cabinet opening width and depth measurements from the drop-down menus above. Note: we will manufacture your slide-outs based on the cabinet measurements you select from the drop-down menu. Once installed, your slide-out shelf will have an approximate ¼ - inch clearance on each side for a perfect fit. To begin, first reference the cabinet measuring guide in the 'specifications' section below. All slide-a-shelf cabinet organizers are custom-made to fit your clear cabinet opening width and unobstructed internal depth measurements. Don’t assume measurements. Watch our how-to-measure video and use our measuring guide; cabinets can be constructed in a variety of ways and utilize different hinges/hardware that can impact your measurements. Full extension rails with soft closing feature: the Slide-A-Shelf standard made-to-fit slide-out shelf featured here includes steel full-extension ball-bearing rails with a soft closing feature. It comes fully assembled for quick and easy installation to the base/floor of your cabinet or existing full shelf…an installation template and all hardware are included. This slide-out shelf will fit perfectly and increase the usable storage space of the existing cabinets in your home. They are ideal for your kitchen, pantry, bathrooms, laundry room, linen closet, or garage. Now, you can finally get organized and enjoy the convenience of having all the items you store within easy reach. Say goodbye to messy and cluttered shelves. Unlike other roll-out shelves, all slide-a-shelf models are custom-made to fit your cabinets. Choice of wood front: the Slide-A-Shelf standard made-to-fit slide-out shelf is available in your choice of 4 wood fronts to complement your cabinet finish and décor. Birch (pre-finished) Maple (ready to finish) Oak (ready to finish) Poplar (ready to paint) Structure: Slide-A-Shelf standard made-to-fit slide-out shelves are designed with dado and rabbet joint construction for superior strength and are maintenance-free for years of convenience. Installation takes only minutes with a battery-powered Phillips screwdriver. You can find our easy installation guide under the ‘specifications’ below. Solid 9-ply UV cured polyurethane coated birch construction featuring full-extension, heavy-duty ball bearing slides rated for 100 lbs. including the weight of the shelf. Per the detailed measuring instructions; "We will manufacture your slide-outs to the exact dimensions of the opening you provide, with an approximate 1/4 inch clearance of the opening on each side." So, the front wood trim of the shelf will always measure 1/2 inch less than the width of the clear cabinet opening to ensure that it fits the cabinet perfectly. We recommend that you select the clear-width opening of your cabinet. We will manufacture the shelf and rails to fit within the opening. If you were to select 20" as the opening the usable width inside the shelf would be approximately 17 5/8". To remove the slide-out shelf, extend the shelf out, and locate the black levers on each side of the shelf rails. At the same time, push the black levers down on the right side, and up on the left side. The rails should release and you will be able to pull the shelf out of the cabinet.