15 x 12.5 Triomphe Orangery Garden Chalet Greenhouse - Black Frame (4.6m x 3.8m)

15 x 12.5 ft Triomphe Garden Chalet Greenhouse – T-Shaped Orangery for Year-Round Garden Living

Spacious Walk-In Greenhouse Designed for Entertaining, Relaxing & Growing

The Triomphe Garden Chalet Greenhouse is a premium, T-shaped orangery-style structure designed to extend your outdoor living space. With vaulted ceilings, generous floor area, and an open internal layout, it functions as both a high-performance greenhouse and a comfortable garden retreat.

Large enough to accommodate a dining table, lounge seating, or a combination of plants and furniture, the Triomphe offers flexibility for growing, entertaining, or simply enjoying time outdoors throughout the year.

Vaulted Ceilings and Open T-Shaped Layout

The robust T-shaped design features high side walls and vaulted ceilings, providing over 9 feet of internal headroom. This creates a bright, open interior that feels spacious and comfortable, with ample room for tall plants, shelving, and furniture without visual clutter.

Extra-Strong Aluminium Frame with Galvanised Steel Base

The black powder-coated aluminium frame is reinforced with internal supports and features an extra-thick profile for increased rigidity. A galvanised steel perimeter base adds structural stability and includes an anchoring kit for secure installation in exposed conditions.

Unlike many greenhouses, the Triomphe is designed without internal diagonal bracing, maintaining a clean, open interior while delivering excellent strength and wind resistance.

Advanced Glazing for Light Control, Comfort and Safety

The Triomphe Garden Chalet uses two virtually unbreakable glazing types to create a comfortable and protected environment:

• Roof panels: 10mm multi-wall polycarbonate panels that diffuse strong sunlight, protect plants from frost, and help extend the growing season
• Wall panels: 2mm crystal-clear acrylic glazing with over 90% light transmission, improved insulation, reduced outside noise, and enhanced safety

All panels are 100% UV protected and engineered to resist discolouration, cracking, and shattering over time.

Automated Roof Ventilation for Effortless Climate Control

Two large automated roof vents regulate airflow, heat, and humidity without the need for electricity. This passive ventilation system maintains fresh air circulation while helping stabilise internal temperatures for plants, furnishings, and people.

Wide Double Doors with Flexible Placement

Wide, double hinged doors provide smooth access and can be installed on either the front or side of the structure to suit your layout. A low-threshold entry allows easy access for wheelbarrows, furniture, or mobility aids, while the lockable door handle adds security (lock not included).

Integrated Gutters for Rainwater Collection

Built-in gutters and outlets support rainwater harvesting for garden irrigation, helping reduce water usage and support sustainable gardening practices.

Low-Maintenance Garden Living

Designed for minimal upkeep, the Triomphe Garden Chalet allows you to focus on enjoying your space rather than ongoing maintenance. Durable materials and smart engineering ensure long-term performance across seasons.

Specifications

• Assembled Dimensions: W 454 x D 380 x H 285 cm
• Frame: Black powder-coated aluminium
• Base: Galvanised steel perimeter base with anchoring kit included
• Roof Panels: 10mm multi-wall polycarbonate, 80% light transmission
• Wall Panels: 2mm crystal-clear acrylic glazing, 92% light transmission
• Ventilation: 2 automated roof vents (no power required)
• Wind Resistance: Up to 120 km/h
• Snow Load: 80 kg/m²
• Total Weight: Net 240.9 kg / Gross 254.9 kg
• Frame Colour: Black
• Warranty: 10 years

Installation Resources

Step-by-step guidance is provided to support safe and secure assembly:

Download Assembly Guide

Shipping

Maze products are dispatched from Melbourne, with free Australia wide shipping.

Green My Space ships from warehouses in multiple states across Australia including Perth, New South Wales, and Victoria. Please be advised that when ordering multiple items they may come from different warehouses and with different couriers. You will be sent multiple tracking numbers if this is the case.If your items are in stock, they order generally be dispatched within 3 business days of order placement. On very rare occasions this might extend a little longer. Items that are not in stock will be available on pre-order only, which will be indicated on the product page. Pickups are not available for Maze products