The StoraStack is designed to fit plastic, nested containers measuring up to 6.25′ x 7′ with lids that snap (not twist or clip). * Top grocery store brands including Ziploc®, Glad®, Rubbermaid TakeAlongs® and Target Up&Up® make containers that fit nicely and can be replaced as needed. The clip dispenser at the back of the drawer holds a stack of 8 containers in place. All of the containers should be the same exact shape and nest together for best results. Individual dividers keep lids separated and upright so everything stays tidy. To use, pull the drawer out and tilt down to resting position at eye-level. Remove the top container from the clip dispenser with a gentle pulling motion and grab a lid.