Garden HighPro PROBOX Magnum 300XL Grow Tent 300×200×220 cm – Extra Large Professional Grow Tent with 97% Mylar & Strong Metal Frame

The Garden HighPro PROBOX Magnum 300XL Grow Tent 300×200×220 cm is an extra-large professional indoor grow tent designed for growers who want maximum control, stability, and efficiency in larger indoor growing setups. Thanks to its spacious 300 × 200 cm growing area, extra height of 220 cm, strong 600D nylon fabric, and highly reflective 97% Mylar interior, this grow tent creates a stable and fully controlled growing environment for every growth stage.

This large professional grow tent offers ample space for multiple powerful LED grow lights, extensive ventilation systems, and hydroponic grow setups. The robust metal frame supports heavy equipment up to 108 kg, allowing larger ventilation systems, carbon filters, and climate control equipment to be safely installed.

The PROBOX Magnum 300XL is ideal for growers who want to create a spacious indoor grow room with optimal light distribution, efficient ventilation, and maximum stability.

Extra Large Grow Tent for Professional Indoor Cultivation

With an impressive growing area of 6 m², this grow tent offers exceptionally ample space for larger grow setups and extensive plant arrangements. The extra height of 220 cm makes it easier to position powerful LED grow lights at the correct distance for even light distribution.

This large indoor grow tent is particularly suitable for:

• professional indoor growing installations
• larger hobby growing projects
• hydroponic growing systems
• multiple LED grow lights
• extensive ventilation systems

Depending on pot size and growing method, this tent can typically accommodate 16 to 30 plants.

97% Mylar Reflection for Maximum Light Utilization

The interior of the PROBOX Magnum 300XL is lined with premium Mylar with 97% light reflection. This reflective surface helps to distribute light from grow lights more efficiently throughout the grow space.

Advantages of Mylar reflection:

• better light distribution in the tent
• more efficient use of LED grow lights
• less light loss
• more stable growing conditions

This creates an efficient and evenly lit indoor growing environment.

Strong 600D Fabric & Robust Metal Frame

The PROBOX Magnum series is known for its durable construction. The 600D nylon fabric is strong, tear-resistant, and designed to keep light completely inside the tent. This ensures a stable light schedule and prevents unwanted light leakage.

The sturdy metal frame provides maximum stability and can support heavy equipment such as:

• LED grow lights
• inline fans
• carbon filters
• climate controllers

With a maximum load capacity of 108 kg, this grow tent is suitable for professional indoor growing setups.

Smart Ventilation and Access System

A stable growing climate requires good air circulation and ventilation. The PROBOX Magnum 300XL is therefore equipped with multiple ventilation openings, cable passages, and spacious access doors.

This allows fans, carbon filters, and air ducts to be easily installed, while plant maintenance remains simple.

The spacious doors also ensure comfortable access during care, training, or harvest.

Technical Specifications

• Model: PROBOX Magnum 300XL
• Dimensions: 300 × 200 × 220 cm
• Grow Area: 6 m²
• Material: 600D nylon fabric
• Reflection: 97% Premium Mylar
• Frame: Sturdy metal construction
• Maximum load capacity: 108 kg

Ventilation & Openings

• Front doors: 2 × 95 × 180 cm
• Front windows: 2 × 25 × 25 cm
• Side doors: 4 × 95 × 115 cm
• Air inlets: 2 × 60 × 25 cm
• Extraction sockets: 10 × Ø 21 cm / Ø 27 cm
• Electrical cable sockets: 6 × Ø 8 cm
• Frame tubes diameter: Ø 2 cm

Why Use a Grow Tent?

A grow tent helps growers to create a stable and controlled indoor growing environment where temperature, humidity, ventilation, and lighting are more manageable.

Key benefits:

• better temperature control
• better humidity control
• maximum light reflection
• less light loss
• more efficient plant development

The PROBOX Magnum 300XL is ideal for growers who want to build a large indoor grow space with full control over climate, lighting, and ventilation.

Why Buy from Amsterdam Grow Supplier

Amsterdam Grow Supplier offers high-quality indoor growing equipment from reliable brands such as Garden HighPro. With fast delivery, competitive prices, and expert advice, we help growers set up a stable and efficient indoor growing environment.