Our frameless cabinetry is just as rugged. The construction of the box has 3/4″ UV cured lumber core, no added formaldehyde walnut plywood making up the sides, the bottom, the top and the stretcher. The 1/2″ back is UV cured lumber core walnut plywood, again, no added formaldehyde.
The interior shelf is 3/4″ UV cured lumber core walnut plywood (safe to say at this point, all our plywood is no added formaldehyde). The drawer box is built out of 5/8″ walnut with a rout near the lower edge which frames and secures the 1/2″ bottom (1/2″ walnut lumber core plywood).
The drawer fronts are solid wood, 1″ thick. Our doors are also 1″ thick, solid wood. (Note: Painted cabinets that have doors with a flat panel design receive a door panel that is maple veneered MDF)