The Harloff MGH Tray Insert system provides specialized drawer organization liners designed for Massachusetts General Hospital (MGH) style emergency, pediatric, and adult code response carts. Constructed with a rigid 3/16-inch white High Impact Polystyrene (HIPS) bottom plate, these drop-in tray inserts create a smooth, durable, and chemical-resistant base inside cart drawers. Tailored to standard MGH clinical configurations, the pediatric (PED #1) and adult (Adult #1) variants establish standardized compartment layouts that keep critical resuscitation supplies, airway devices, IV start kits, and emergency pharmaceuticals neatly organized during acute care response. Designed to withstand rapid drawer access and frequent chemical wipe-downs, these inserts support immediate visual supply identification, streamline cart restocking protocols, and enhance emergency workflow efficiency across pediatric wards, intensive care units, and emergency departments.