Made from galvanized steel, Fulterer's new FR 3001 undermount full-extension concealed drawer slide is designed for use with face-frame constructed cabinets. Fulterer says the slides feature a smooth, soft-close device to prevent slamming and are designed for four-sided drawers; notching is not required. Fulterer's FR 3002 undermount full-extension concealed drawer slide is for use with frameless cabinetry.