This Honey Can Do shelving rack is a perfect fit for my space based on the dimensions provided by Wayfair and sturdy enough for light duty use.  The slide-out basket/drawer BOTTOM INSIDE dimensions are 3.5" tall x 10" wide x 16" long as the basket is slightly tapered. The OUTSIDE width at the TOP of the slide-out basket (that might have to fit thru a cabinet door) is 12 3/8" wide.  Most other critical dimensions are already provided by Wayfair.  It came quickly and with more than adequate hardware, including 2 basket drawer stops, 4 attachments for stacking additional units and feet have levelers.  The basket slides in metal grooves that screech a little during operation, but I can live with that!