BELOW ARE STANDARD CONFIGURATIONS. SHELVING CAN REPLACE DRAWERS IN EVERY INSTANCE. FLUSH DENOTES END PANELS AND DRAWER FRONTS ARE EVEN. COLLAR ADDS A 3/4" RUNNER ACROSS BOTTOM EXTENDED 3/4" PAST DRAWER FRONTS AND EVEN WITH END PANELS. WE CAN CREATE CUSTOM CONFIGURATIONS. PLEASE INQUIRE. (866) 480-8094