The Garden HighPro PROBOX Magnum 300XXL Grow Tent 300×300×220 cm is an extra large professional grow tent specifically designed for growers who want maximum space, stability, and climate control in large-scale indoor grow setups. Thanks to its enormous 300 × 300 cm growing surface, durable 600D lightproof fabric, 97% reflective Mylar inner layer, and sturdy metal frame, this grow tent offers a stable and efficient growing environment from seedling to harvest.

With a total growing area of 9 m², the PROBOX Magnum 300XXL is ideal for growers who want to install multiple powerful LED grow lights, extensive ventilation systems, and larger plant setups. The extra height of 220 cm allows for optimal positioning of lighting, filters, and fans for a stable and controlled indoor growing environment.

This professional grow tent is designed for serious hobby growers and professional indoor growers who want to create a large indoor growing space with maximum control over light, air circulation, and climate management.

Extra Large Grow Tent for Professional Indoor Cultivation

With an impressive growing surface of 300 × 300 cm, the PROBOX Magnum 300XXL offers an exceptional amount of space for larger plant setups and advanced grow installations. The generous dimensions make this tent ideal for growers working with multiple LED grow lights or complete cultivation systems.

This extra large grow tent is particularly suitable for:

• large indoor grow setups
• multiple LED grow lights
• hydroponic grow systems
• extensive ventilation installations
• professional grow rooms

Depending on the pot size and growing method, typically 24 to 36 plants can be comfortably placed in this spacious grow tent.

97% Mylar Reflection for Maximum Light Distribution

The interior of the PROBOX Magnum 300XXL is lined with premium Mylar with 97% reflection. This reflective material helps to distribute light evenly throughout the entire grow space, allowing plants to make more efficient use of the available lighting.

Advantages of the Mylar interior:

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

By reflecting light optimally, the tent contributes to consistent plant development and a more efficient indoor growing environment.

Strong 600D Fabric & Robust Metal Frame

The PROBOX Magnum series is known for its durable construction and reliable stability. The strong 600D nylon fabric is tear-resistant, hard-wearing, and designed to keep light completely inside the tent. This ensures a stable light schedule and minimizes external light intrusion.

The sturdy metal frame offers excellent support for heavy growing equipment such as:

• powerful LED grow lights
• carbon filters
• inline fans
• ventilation ducts and climate control equipment

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

Optimized Ventilation and Access System

Stable air circulation is essential for successful indoor cultivation. Therefore, the PROBOX Magnum 300XXL features multiple ventilation openings and cable passages that allow for easy installation of fans, filters, and air ducts.

The large access doors and windows ensure easy access to the plants for maintenance, training, and harvesting.

Key Features

• Extra large grow tent 300 × 300 × 220 cm
• Ideal for professional indoor grow rooms
• 97% Mylar reflection for maximum light utilization
• Strong 600D lightproof fabric for stable growth conditions
• Sturdy metal frame with high load capacity
• Space for multiple LED grow lights
• Suitable for large ventilation systems and filters

Technical Specifications

• Model: PROBOX Magnum 300XXL
• Dimensions: 300 × 300 × 220 cm
• Grow area: 9 m²
• Material: 600D nylon fabric
• Reflection: 97% Premium Mylar
• Frame: Metal construction
• Maximum load capacity: 108 kg

Ventilation & Openings

• Front doors: 2 × 145 × 180 cm
• Front windows: 2 × 30 × 30 cm
• Side doors: 4 × 145 × 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 tube diameter: Ø 2 cm

Why Use a Grow Tent?

A grow tent helps to create a stable and controlled indoor growing environment where temperature, humidity, ventilation, and lighting can be optimally managed.

Key advantages:

• better temperature control
• better humidity control
• maximum light reflection
• more efficient use of grow lights
• more stable plant development

The PROBOX Magnum 300XXL is an ideal solution for growers who want to build a large professional indoor grow space with maximum control over climate and lighting.

Why Buy from Amsterdam Grow Supplier

Amsterdam Grow Supplier offers a carefully selected range of high-quality grow equipment from reliable brands such as Garden HighPro. With fast delivery, competitive prices, and expert advice, we help growers create an efficient and stable indoor growing environment.