Extra Large Polycarbonate Greenhouse | Exaco RIGA XL

Extra Large Polycarbonate Greenhouse Professional Series

Built for Year-Round Growing | Sold by South Table Sheds

• Free Shipping (lower 48 states)
• Authorized Exaco Dealer

The RIGA XLarge is a commercial-grade extra large polycarbonate greenhouse engineered for gardeners who refuse to compromise. German-crafted with 16mm triple-wall glazing and a reinforced aluminum frame, this greenhouse maintains optimal growing conditions through brutal winters and scorching summers alike.

Whether you're extending your growing season, starting seeds months early, or cultivating year-round harvests, the RIGA XLarge delivers the space, insulation, and durability that hobbyist greenhouses simply can't match.

Five Sizes to Fit Your Space

The RIGA XLarge Professional Series offers flexibility for any property:

RIGA XL 5 - 231 sq. ft.

• 14' × 16'5" × 9'10"
• 2 large barn style doors with locks
• Door Size 37.5" W x 74" H
• 4 roof windows
  
  

RIGA XL 6 - 280 sq. ft.

• 14' × 19'10" × 9'10"
• 2 large barn style doors with locks
• Door Size 37.5" W x 74" H
• 4 roof windows
  

RIGA XL 7 - 322 sq. ft.

• 14' × 23' × 9'10"
• 2 large barn style doors with locks
• Door Size 37.5" W x 74" H
• 6 roof windows
  

RIGA XL 8 - 368 sq. ft.

• 14' × 26'3" × 9'10"
• 2 large barn style doors with locks
• Door Size 37.5" W x 74" H
• 6 roof windows
  

RIGA XL 9 - 413 sq. ft.

• 14' × 29'6" × 9'10"
• 2 large barn style doors with locks
• Door Size 37.5" W x 74" H
• 8 roof windows
  
  

All models stand nearly 10 feet at peak height, giving you room for tall crops, vertical growing systems, and comfortable workspace.

Why the RIGA XLarge Outperforms Standard Greenhouses

Superior Insulation That Cuts Heating Costs

Most greenhouses use 4mm single-layer glazing. The RIGA XLarge features 16mm triple-wall polycarbonate on all sides and gable ends—functioning like triple-pane windows for your plants.

This matters for your wallet: triple-wall construction dramatically reduces heat loss compared to single-pane glass or thin polycarbonate panels. In an XL polycarbonate greenhouse, those savings compound quickly. You'll spend less on heating while your plants stay warmer.

Built to Handle Extreme Weather

The RIGA's distinctive onion-shaped profile isn't just aesthetically striking—it's functional engineering:

• Heavy snow loads slide down the curved roof rather than accumulating
• High winds pass over the aerodynamic shape, reducing structural stress
• 13-gauge aluminum extrusions provide commercial-grade frame strength
• Heavy-duty rubber seals along all openings create an airtight barrier against moisture and drafts

This greenhouse is designed for climates where lesser structures fail.

Optimized Light for Healthier Plants

The curved design serves another purpose: maximizing light penetration while minimizing harsh shadows. Triple-wall polycarbonate naturally diffuses sunlight, spreading it evenly throughout the growing space. Your plants receive consistent illumination without the leaf burn that direct glass exposure can cause.

The result is uniform growth conditions from corner to corner—no more repositioning plants to chase the light.

Ventilation That Runs Itself

Temperature regulation in a large greenhouse can be challenging. The RIGA XLarge solves this with a comprehensive ventilation system:

• Oversized roof windows (4-8 depending on model size)
• Extra-large rear wall window for cross-ventilation
• 30" wide Dutch barn-style doors with key locks on both ends
• Automatic roof openers that respond to temperature changes—no electricity required

As interior temperatures rise, the roof vents open automatically. When temperatures drop, they close. This passive system maintains ideal growing conditions while you're away, eliminating the need for powered fans or constant monitoring.

What's Included

Every RIGA XLarge polycarbonate greenhouse ships with:

• Complete aluminum frame with anodized finish for corrosion resistance
• 16mm triple-wall polycarbonate panels (sides and gable ends)
• Two 37.5" × 74" Dutch barn-style doors with locks
• Roof windows with automatic openers (quantity varies by model)
• All necessary hardware and rubber seals
• Detailed assembly instructions

Optional Accessory Kit

Enhance your greenhouse with the professional accessory package, which includes additional shelving, and foundation for some sizes.

Specifications at a Glance

Glazing: 16mm triple-wall polycarbonate (walls and gables)

Frame: 13-gauge anodized aluminum extrusions

Door Size: 37.5" W × 74" H (two doors included)

Roof Windows: 37.5" W × 39.5" H with automatic openers

Who Should Buy the RIGA XLarge?

This polycarbonate greenhouse is ideal for:

• Serious home gardeners who want year-round growing capability
• Market gardeners needing reliable season extension for early crops
• Plant collectors protecting valuable specimens from temperature extremes
• Anyone in harsh climates where standard greenhouses can't perform

If you've outgrown hobby-grade structures or you're investing in a greenhouse for the first time and want to do it right, the RIGA XLarge delivers professional results.

Questions?

Not sure which size fits your needs? Wondering about foundation requirements or local permit considerations? Contact South Table Sheds—we're happy to help you choose the right greenhouse for your property and growing goals.