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

The Gratnells Callero Tall Maker Adder Unit is a high-capacity classroom storage solution designed to keep STEM materials, maker supplies, and everyday learning resources organized and easy to access. Featuring a durable silver steel frame with 28 shallow and 7 deep Sunshine Yellow trays, it helps maximize storage while maintaining a compact footprint.

Built for schools, makerspaces, libraries, and innovation labs, this modular storage unit supports flexible classroom layouts and can be expanded alongside additional Callero Custom frames as storage needs grow.

Why Educators Use It

Modern STEM classrooms require organized, accessible storage that encourages student independence while reducing classroom clutter. The Callero Tall Maker Adder Unit provides high-density storage with removable trays, antimicrobial tray options, and integrated safety features that make it ideal for busy educational environments.

Key Features

• Includes 28 shallow trays and 7 deep trays for organizing a wide variety of classroom materials.
• Compact tall frame maximizes storage capacity while minimizing floor space.
• Compatible with the modular Callero Custom system for future classroom expansion.
• StopSafe runners help prevent trays from being accidentally removed, improving classroom safety.
• Durable steel frame supports up to 250 kg of evenly distributed load.
• Removable polypropylene trays each support up to 5 kg and simplify resource distribution and cleanup.

Classroom Applications

• Store robotics kits, engineering components, and maker supplies.
• Organize STEM manipulatives, classroom tools, and science equipment.
• Create efficient resource stations in makerspaces and innovation labs.
• Support collaborative classrooms with clearly organized student materials.