Outsunny Greenhouses: 4 Picks Ranked by Specs

Quick picks

Our 4 picks

1 Best overall

Outsunny 20x10x7 ft White Walk-in Greenhouse

Best for: Large-scale plant protection and ventilation

Frame Material

galvanized steel

Panel Material

140 GSM PE

Size

20 x 10 x 7 ft

Height

7 ft

Door Type

zippered door

Ventilation

mesh-protected windows

View on Amazon: Outsunny 20x10x7 ft White Walk-in Greenhouse Affiliate link

This Outsunny greenhouse offers 20 by 10 by 7 feet of growing space. It features a galvanized steel frame with reinforcing tubes for stability. The white PE cover blocks UV rays while letting 85% of sunlight through. You get six mesh-protected windows and a zippered door for ventilation. It is a practical choice for gardeners needing a large, walk-in structure.

Pros

• Large 20 x 10 x 7 ft footprint
• Galvanized steel frame with seven rows of reinforcing tubes
• UV-resistant PE cover allows 85% light transmission
• Six mesh-protected windows for ventilation

Cons

• 67.1 lb weight makes it bulky to move
• Requires burying edges for secure installation
• No automatic ventilation system included

Good fit if

• You need a large walk-in space for multiple plants
• You want UV protection for your crops
• You prefer manual ventilation via zippered doors

Skip if

• You need a compact structure for small yards
• You want a greenhouse that requires no ground anchoring
• You prefer automatic climate control features

Verdict: Outsunny 20x10x7 ft Walk-in Greenhouse is a sturdy option for gardeners who need ample growing space and durable UV protection. It fits those willing to anchor the structure firmly for stability.

2 Best premium

Outsunny 6x6 Polycarbonate Walk-in Greenhouse

Best for: Small gardens needing UV protection

Frame Material

aluminum

Panel Material

polycarbonate

Size

6' x 6'

Height

6.4' H

Door Type

lockable door

Ventilation

adjustable roof vent

View on Amazon: Outsunny 6x6 Polycarbonate Walk-in Greenhouse Affiliate link

This 6 x 6 foot walk-in greenhouse uses thick polycarbonate panels to block UV rays while letting in 90% of light. The aluminum frame resists corrosion and supports an adjustable roof vent for humidity control. You get a 6.4 foot height for easy access and included rain gutters for water collection. It suits small gardens needing a compact, durable grow space.

Pros

• Polycarbonate panels block UV damage
• Aluminum frame prevents corrosion
• Adjustable roof vent manages humidity
• Included rain gutters collect water

Cons

• 6 x 6 foot footprint is small
• 6.4 foot height limits tall plants
• No side windows listed for airflow

Good fit if

• You have limited garden space
• You want UV protection for plants
• You need a compact grow area

Skip if

• You need room for large trees
• You require extensive side ventilation
• You want a taller structure

Verdict: Outsunny 6x6 Polycarbonate Greenhouse fits small gardens needing UV protection and compact storage. It works best for hobbyists with limited space.

3 Best steel

Outsunny 20x10x7 Walk-in Tunnel Greenhouse

Best for: Large-scale seasonal plant cultivation

Frame Material

galvanized steel

Panel Material

PE plastic

Size

20' x 10' x 7'

Height

7'

Door Type

zipped rollup door

Windows

8

View on Amazon: Outsunny 20x10x7 Walk-in Tunnel Greenhouse Affiliate link

This Outsunny greenhouse measures 20 by 10 by 7 feet. It features a galvanized steel frame for rust resistance. The PE plastic cover lets in sunlight. Eight roll-up side windows with netting provide ventilation. A zippered roll-up door allows easy access. You get 67 pounds of material. This large structure suits growers needing significant floor space for extended seasons.

Pros

• Galvanized steel frame resists rust
• Eight roll-up windows with netting
• Large 20 by 10 foot footprint
• Zippered roll-up entrance door

Cons

• PE plastic cover blocks some light
• No automatic ventilation system
• Manual assembly with tether balls

Good fit if

• You need maximum growing floor space
• You want stable galvanized steel framing
• You prefer manual roll-up ventilation

Skip if

• You require polycarbonate panel clarity
• You need a smaller footprint
• You want automatic climate control

Verdict: Outsunny 20x10 ft Green Tunnel offers ample space for serious gardeners. Its steel frame and large windows support robust plant management. It fits those prioritizing size over premium glazing.

4 Best budget

Outsunny 8x6x7 Walk-in Greenhouse, White

Best for: Small garden spaces needing UV protection

Frame Material

powder-coated steel

Panel Material

140 GSM PE cover

Size

8' x 6'

Height

84 inches

Door Type

zippered

Windows

4

View on Amazon: Outsunny 8x6x7 Walk-in Greenhouse, White Affiliate link

This Outsunny greenhouse offers 8 by 6 by 7 feet of interior space with a 7.5-foot height. It features a two-layer 140 GSM PE cover that blocks UV rays while letting 85% of sunlight through. The frame uses 1.25-inch powder-coated steel tubing for stability. Four roll-up windows with screens allow you to control heat and light. A zippered door provides easy access for tending to your plants.

Pros

• Two-layer 140 GSM PE cover with reinforcement grid
• 1.25-inch powder-coated steel frame resists chipping
• Four roll-up windows with screens for ventilation
• 85% light transmission protects plants from UV scorching

Cons

• Smaller footprint than the 11.5x10 and 20x10 models
• PE cover requires burying 6-inch edges for stability
• No automatic venting or climate control sensors

Good fit if

• You need a compact space for small vegetable plots
• You want easy ventilation via roll-up windows
• You prefer a white frame for a clean look

Skip if

• You require a large area for commercial growing
• You need automatic temperature regulation
• You want a tunnel-style design without a door

Verdict: Outsunny 8x6x7 ft Walk-in Greenhouse fits gardeners with limited space who need reliable UV protection and manual ventilation control. It is a practical base for small-scale plant care.

Specifications side by side

Outsunny Greenhouses: 4 Picks Ranked by Specs

The Outsunny lineup offers distinct choices based on size and material. The 20x10x7 ft White Walk-in Greenhouse provides ample space for large-scale plant protection. Its 20-foot length suits gardeners needing serious growing room. The 20x10x7 ft Walk-in Tunnel Greenhouse in green offers similar capacity for seasonal cultivation.

For smaller spaces, the 6x6 Polycarbonate Walk-in Greenhouse fits tight gardens. It includes roof vents for UV protection. The 8x6x7 ft White Walk-in Greenhouse also targets limited areas. It features windows for manual ventilation control. These models range from compact units to expansive tunnels. You can choose based on your available footprint and specific ventilation needs.

Where Outsunny Fits Your Needs

Outsunny covers a wide size range, from compact 6x6 foot units to large 20x10 foot structures. You can choose between white, silver, or green finishes. All listed models are walk-in styles, ensuring easy access to your plants. The lineup includes polycarbonate and tunnel designs. However, you will not find single-person shelters or non-walk-in options here. There are also no automatic ventilation systems or digital displays in this specific selection. You must rely on manual vents for climate control. This brand suits gardeners who prioritize physical space and basic durability over high-tech features.

How to choose the right one

1. Check footprint dimensions

   Measure your available garden space before selecting a model. The 20x10x7 ft White Walk-in Greenhouse requires a 20-foot length and 10-foot width, which fits large-scale operations. In contrast, the 6x6 Polycarbonate Walk-in Greenhouse occupies only a 6-foot square, making it ideal for tight urban yards. The 8x6x7 ft White Walk-in Greenhouse offers a middle ground at 8 feet long. Ensure you leave extra room for door clearance and airflow around the structure to maintain stability and ease of access.

2. Evaluate structural weight

   Heavier frames generally indicate more robust construction, which helps the structure withstand wind and snow loads. The 20x10x7 ft White Walk-in Greenhouse weighs 67.1 pounds, providing a solid base for serious gardeners. The 20x10x7 Walk-in Tunnel Greenhouse is slightly lighter at 67 pounds. The 8x6x7 ft White Walk-in Greenhouse is the lightest at 47.3 pounds, which may require more careful anchoring. The 6x6 Polycarbonate Walk-in Greenhouse weighs 58 pounds. Consider your local weather conditions when weighing these figures against your stability needs.

3. Match material to climate

   The material of the walls and roof affects light transmission and durability. The 6x6 Polycarbonate Walk-in Greenhouse uses polycarbonate panels, which are known for impact resistance and even light diffusion. This makes it suitable for hobbyists needing reliable UV protection in smaller spaces. Other models in the lineup rely on different glazing types not specified here. If you prioritize impact resistance and consistent light for delicate seedlings, the polycarbonate option stands out. For other climates, consider how the white or green finishes reflect or absorb heat.

4. Review ventilation features

   Proper airflow is critical for preventing mold and managing temperature. The 6x6 Polycarbonate Walk-in Greenhouse explicitly lists vents and a roof vent as key features. These allow you to control humidity and heat buildup manually. The 8x6x7 ft White Walk-in Greenhouse highlights windows, which also aid in ventilation and light. The larger 20-foot models do not list specific vent types in their specs. You must verify if these larger structures include adjustable vents to ensure your plants do not overheat during warm seasons.

5. Select style for access

   All listed Outsunny models are walk-in styles, which means you can enter the structure to tend to your plants. This is a significant advantage over smaller, non-walk-in tunnels. The 20x10x7 ft White Walk-in Greenhouse offers the most interior space for moving around. The 8x6x7 ft White Walk-in Greenhouse provides adequate room for small-scale care. The 6x6 Polycarbonate Walk-in Greenhouse is compact but still allows entry. Choose a walk-in style if you plan to store tools inside or need easy access to tall plants.

Frequently asked questions

See also

• best outsunny greenhouses under 200
• outsunny vs garvee greenhouse
• best outsunny pergolas
• best outsunny playhouses