Gratnells Callero Tall Maker Adder Unit with 28 Shallow & 7 Deep Flame Red Trays – Silver Frame

The Gratnells Callero Tall Maker Adder Unit is a modular classroom storage solution designed to maximize organization while using minimal floor space. Featuring a durable silver steel frame with 28 shallow and 7 deep Flame Red trays, it provides flexible storage for STEM materials, classroom supplies, robotics components, and maker resources. Its expandable design makes it easy for schools to build organized learning environments that grow with their needs.

Why Educators Use It

Ideal for STEM classrooms, makerspaces, libraries, and innovation labs, this storage unit helps teachers keep materials accessible, organized, and ready for instruction. The combination of shallow and deep trays supports everything from small engineering components to larger classroom equipment while promoting student independence and efficient classroom management.

Key Features

• Includes 28 shallow trays and 7 deep Flame Red trays for versatile classroom storage.
• Heavy-duty steel frame supports up to 250 kg of distributed weight.
• Compact footprint maximizes storage without sacrificing valuable classroom space.
• StopSafe runners help prevent trays from being accidentally removed.
• Smooth, rounded frame design enhances safety in student learning environments.
• Modular Callero system allows additional units to be added as storage needs grow.

Classroom Applications

• Organize robotics, engineering, and STEM project materials.
• Store classroom tools, consumables, and science lab supplies.
• Create accessible makerspace storage for student projects.
• Support library, media center, and collaborative learning environments.