Gratnells Callero STEAM Treble Trolley – 16 Shallow & 4 Deep Trays

The Gratnells Callero STEAM Treble Trolley is an ideal entry-level STEAM hub, designed to combine safe, flexible storage with collaborative learning features. With three full columns of trays (16 shallow and 4 deep), plus integrated accessories, it provides a versatile and mobile workstation for projects, resources, and equipment.

Built from lightweight curved steel, the trolley is safe for use around children with no sharp edges. StopSafe runners ensure trays can only be pulled out safely to a controlled distance, while heavy-duty braking castors provide smooth mobility and secure positioning.

The durable metal top doubles as an extra work surface, creating a central hub for teamwork and experimentation. The included accessory pack – 12 green mini-bins, 5 single hooks, and 5 double hooks – attaches to the side panels, keeping tools and materials organised and easily accessible.

Please let us know your preferred tray colours when ordering. If you’d like a mix of colours, just add a note at checkout or contact our team — we’re happy to customise the trays to suit your classroom.

Key Features

• Supplied with 16 Shallow Trays (F1) and 4 Deep Trays (F2)
• Additional metal work surface for collaborative tasks
• Includes 12 mini-bins, 5 single hooks, and 5 double hooks
• StopSafe runners ensure safe tray access and prevent accidents
• Lightweight, curved steel frame with no sharp edges
• Large lockable castors for smooth mobility and safety
• Customisable side panels with holes/slots for accessories
• Made from strong powder-coated steel in Gratnells Grey

Educational Benefits

• Promotes hands-on, project-based learning in STEAM activities
• Keeps materials, components, and projects organised for efficient lessons
• Encourages independence and responsibility with easy access to resources
• Supports collaboration through a central mobile workspace
• Reduces teacher workload by enabling student-led resource management

Dimensions & Specifications

• Dimensions (mm): H 1065–1090 × W 1065 × D 455
• Product Weight: 35.9 kg
• Frame Load Capacity: 250 kg
• Tray Load Capacity: 5 kg each
• Tray Type: 16 × Shallow (F1), 4 × Deep (F2)
• Tray Colours: Cyan Blue, Flame Red, Grass Green, Jolly Lime, Plum Purple, Royal Blue, Sunshine Yellow, Translucent
• Frame Colour: Gratnells Grey
• Castors: Heavy-duty, non-marking swivel castors with brakes
• Material: Powder-coated steel

Support Documents

• 44GSTT Assembly Instructions

Assembly Video