Specifications:

• Brand: Master Lock Company
• Model: 503RED
• Product Type: Latch Tight Group Lock Box
• Color: Red
• Material: Heavy-duty steel
• Capacity: Holds multiple lockout padlock keys
• Mounting Style: Wall-mount or portable
• Closure Type: Latch-tight locking mechanism
• Access Method: Multiple authorized workers apply personal safety padlocks
• Application: Group lockout/tagout (LOTO)
• Reusable: Yes
• Corrosion Resistant Finish: Yes
• Designed for OSHA-Compliant Lockout Procedures: Yes
• Suitable for Energy Isolation Programs: Yes

Ideal Industries:

• Manufacturing
• Oil and gas
• Chemical processing
• Food and beverage processing
• Pharmaceutical manufacturing
• Utilities
• Mining
• Construction
• Pulp and paper
• Automotive manufacturing
• Metal fabrication
• Warehousing and distribution

Ideal Applications:

• Group lockout/tagout procedures
• Maintenance shutdowns
• Equipment servicing
• Machine repairs
• Plant turnarounds
• Electrical lockout projects
• Mechanical maintenance
• Energy isolation programs
• Contractor lockout coordination
• Facility safety compliance programs

The Master Lock Company 503RED Latch Tight Group Lock Box is a dependable group lockout solution engineered to improve workplace safety during maintenance, equipment servicing, and energy isolation procedures. Designed for both wall-mounted installation and portable use, this versatile lockout box securely stores the keys to machine isolation locks while allowing every authorized employee involved in the work to attach their own personal lock before hazardous equipment can be re-energized. This proven lockout/tagout system helps organizations strengthen OSHA-compliant safety programs by ensuring that machinery remains safely isolated until every worker has completed their assigned task. Buyers frequently ask whether a portable group lock box or a wall-mounted lock box is the better choice—the 503RED offers both options, providing flexibility for permanent lockout stations or mobile maintenance crews. Another common question is whether it can support multiple workers during complex shutdowns; the answer is yes, as the latch-tight design accommodates multiple personal safety padlocks, making it ideal for group maintenance projects, plant shutdowns, contractor coordination, and scheduled preventative maintenance. Constructed from durable steel with a highly visible red finish, the lock box is built to withstand demanding industrial environments while remaining easy to identify during lockout procedures. It is an excellent choice for manufacturing facilities, utilities, chemical plants, food processing operations, mining sites, automotive production, and many other industrial workplaces where effective hazardous energy control is essential. Businesses searching for a Master Lock group lock box, wall-mount lockout box, portable lockout box, group LOTO box, OSHA lockout equipment, lockout tagout storage box, industrial safety lock box, or energy isolation lock box will find the 503RED delivers reliable performance and long-term durability. As an experienced and trusted supplier of certified PPE and industrial safety products, Enviro Safety Products provides dependable lockout/tagout solutions that help organizations protect workers, improve regulatory compliance, and maintain safer, more efficient workplaces.

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