`The Harloff Full Drawer Locking Narcotics Boxes provide heavy-duty, tamper-resistant controlled substance storage designed to fit seamlessly within Harloff Optimal Line medication and cassette carts. Engineered from high-grade, powder-coated steel, these insert boxes establish a secure, secondary locking barrier inside medication drawers to comply with stringent healthcare narcotic storage protocols. Featuring full-width drawer access and specialized security locking mechanisms, they ensure scheduled drugs, controlled substances, and high-risk pharmaceuticals remain safely locked away from unauthorized access. Available in 4-inch (CS-4FLN) and 8-inch (CS-8FLN) height profiles for Optimal Line cassette cart drawers, these units enable healthcare facilities to optimize narcotic security without sacrificing workflow efficiency during medication administration rounds.