Gratnells Callero Custom Low Level 8 Deep Tray Adder Unit – Silver Frame with Sunshine Yellow Trays

The Gratnells Callero Custom Low Level 8 Deep Tray Adder Unit provides compact, high-capacity classroom storage designed for modern learning environments. Built around the trusted Gratnells tray system, this modular unit helps educators organize STEM materials, classroom resources, and maker supplies while maximizing valuable floor space.

Designed as part of the expandable Callero Custom range, this low-profile adder unit integrates seamlessly with compatible starter frames to create flexible storage layouts that can grow alongside classroom needs.

Why Educators Use It

Schools, STEM labs, libraries, and makerspaces rely on organized storage to keep learning materials accessible and protected. The low-level design supports student independence, while the modular system allows educators to build customized storage solutions for changing classroom layouts and instructional needs.

Key Features

• Includes 8 deep Sunshine Yellow storage trays for larger classroom materials and supplies.
• Expandable adder unit integrates with Gratnells Callero Custom storage systems.
• Compact low-level footprint provides high-capacity storage without occupying excessive classroom space.
• Durable steel frame supports up to 250 kg with antimicrobial polypropylene trays rated for 5 kg each.
• StopSafe runners help prevent trays from being fully removed for improved classroom safety.
• Rounded frame design eliminates sharp edges for child-friendly learning environments.

Classroom Applications

• Organize STEM kits, robotics parts, and engineering materials.
• Store science lab equipment and classroom supplies within easy student reach.
• Create flexible storage walls in makerspaces, libraries, and innovation labs.
• Support collaborative classrooms with accessible shared learning resources.