The Ilco MR3 key blank is designed for Rousseau lock applications and is commonly associated with mailboxes, cabinets, tool storage, and industrial workstation locks. Product listings identify it as an Ilco blank used in the mailbox key category, while other sellers specifically describe MR3 blanks as fitting various Rousseau products such as industrial cabinets, mailboxes, toolboxes, and workstations.

This blank is a practical choice for locksmiths, maintenance departments, and facilities that need dependable replacement or duplicate keys for Rousseau-style lock systems. One supplier also identifies the MR3 as a 5-pin Metal-Rousseau key blank, which is useful to include for product context, though pin-count details should be verified against the specific lock before publishing as a hard fitment claim.

Key Features:

• Ilco MR3 metal key blank
• Commonly used for Rousseau lock applications
• Suitable for mailbox, cabinet, toolbox, and workstation use
• Uncut blank for professional key duplication
• Often referenced as a Metal-Rousseau style blank

Applications:

• Rousseau mailbox locks
• Industrial cabinets and workstations
• Toolboxes and storage systems
• Locksmith and facility key duplication inventory

Cross Reference:

• Ilco: MR3
• Alternate code: 108151
• Curtis: MR-3
• Taylor: MR3