Your garden, whatever the weather.
A hardtop polycarbonate gazebo changes how you use your garden. Not just in summer — but on overcast afternoons, during light showers, and into the cooler evenings that define the British outdoor season.
At 3.6 x 3m, there's room for a full dining set and space to move around it. Pull the curtains closed and the garden noise fades. Open them back up and it's a centrepiece again.
It's the kind of structure that makes the garden feel finished — and genuinely usable, not just decorative.
The roof is constructed from twinwall polycarbonate panels — the same material used in commercial greenhouses and architectural glazing. The layered structure diffuses light rather than blocking it, so the space beneath stays bright without glare, and blocks 99% of UV rays.
The sloped roof profile channels rainwater away from the structure rather than pooling on top, which protects both the frame and anything underneath. The powder-coated steel frame resists the kind of surface wear that comes with year-round outdoor exposure.
All four sides come with independent curtains and mosquito netting — use them separately or together depending on the conditions. Ground stakes are included for lawns; expansion screws for hard surfaces such as paving or concrete.
Assembly typically takes 2–3 hours with 2–4 people. No planning permission is generally required as this structure falls under permitted development rights — though it's always worth checking with your local council if you're unsure.
Key Features
Specifications
| Brand | Outsunny |
| Type | Polycarbonate Gazebo |
| Frame Material | Powder-coated steel |
| Roof Material | Twinwall polycarbonate |
| Curtain Material | Polyester |
| Colour | Brown / Beige |
| Dimensions (L x W x H) | 300 x 360 x 270 cm |
| Eaves Height | 204 cm |
| Floor Area | 7.7 m² |
| Wind Rating | Level 6 — Strong Breeze (25–31 mph) |
| Snow Load Capacity | 100 kg |
| UV Protection | Blocks 99% of UV rays |
| Product Weight | 69 kg |
| Number of Boxes | 4 |
| Assembly Time | 2–3 hours (2–4 people recommended) |
| Warranty | 1 year — manufacturer defects |
| Assembly Required | Yes |
Assembly & Setup
Download Assembly Instructions (PDF)What's in the Box
- 1 x Polycarbonate Gazebo
- 4 x Curtains
- 4 x Mosquito Netting
- 8 x Expansion Screws
- 8 x Ground Stakes
- 1 x Assembly Guide
Why Buy From Opal Retail?
UK-Based Support
Our customer service team is based in the UK and available Monday to Friday. We're here to help before, during, and after your purchase.
1-Year Warranty
Every gazebo we sell comes with a minimum 1-year warranty. Buy with confidence knowing we stand behind the quality of everything we stock.
Free Returns
Not quite right? Return any item within 30 days for a full refund, no questions asked. We make the process as straightforward as possible.
Secure Payment
All transactions are encrypted and processed securely. We accept all major cards, PayPal, Klarna, Clearpay, and Shop Pay.
Frequently Asked Questions
Yes. The twinwall polycarbonate roof and powder-coated steel frame are designed for permanent outdoor installation. The structure is rated to Wind Level 6 (Strong Breeze) and a snow load of 100kg, making it suitable for year-round use in the UK. During periods of extreme weather, we recommend removing the curtains and netting for longevity.
Yes — all four curtains and all four mosquito nets are completely independent of each other. You can use the curtains alone for privacy and shade, the netting alone for ventilation without insects, or both together for a fully enclosed space. Each side can be configured separately.
This gazebo is suitable for all surfaces. Expansion screws are included for hard surfaces such as paving slabs or concrete, and ground stakes are included for lawns and soft ground. For wooden decking, specialist wood expansion screws are recommended to avoid splitting the timber — these are not included and should be sourced separately.
Planning permission is not generally required for this structure, as it typically falls under permitted development rights. However, rules can vary depending on your property type, location, and proximity to boundaries. We always recommend checking with your local council before installation if you have any doubt.
Assembly typically takes 2–3 hours and is recommended with 2–4 people due to the size and weight of the components. The product arrives across 4 boxes and includes a full assembly guide. Having an extra pair of hands for the roof panels in particular will make the process significantly easier.
Delivery & Returns
Delivery
- Free standard UK delivery on all orders
- Estimated dispatch within 1-3 working days
- Tracked delivery — you'll receive a tracking link by email
- Mainland UK addresses only
Returns
- 30-day hassle-free returns
- Items must be unused and in original packaging
- Contact our UK support team to arrange a return
- Refunds processed within 5-7 working days