What cabinetry is required for under-counter refrigerated drawers?

Refrigerated drawers (Perlick, U-Line, Sub-Zero) fit a standard 24" wide base opening but vent through the front toe-kick, which must remain completely unobstructed. Because the drawers are "heavy-pull" — often holding 60–80 lbs of product — the surrounding cabinet must be bolted to the floor or countertop to prevent tipping when both drawers are fully extended. A dedicated 15A circuit is required.