8 x 20 Palram Canopia Grand Gardener Polycarbonate Greenhouse in Green

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8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - in situ, angle view, doors open
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - in situ, angle view, doors open
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - in situ, angle view, doors closed
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - isolated angle view
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - vents
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - door framing
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - door handle
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - padbolt
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - padbolt
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - framing
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - warranty
  • 8x20 Palram Canopia Rion Clear Grand Gardener Greenhouse - dimensions

8 x 20 Palram Canopia Grand Gardener Polycarbonate Greenhouse in Green

Save £379.24

Product Code - 121011083


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Usually delivered: 7-10 Working Days.

excludes installation option

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  • 8 x 20 Palram Canopia Grand Gardener Polycarbonate Greenhouse in Green£2,649.00


            Make your grand gardening dreams come true with the 8x20 Palram-Canopia Polycarbonate Greenhouse, an exquisite fusion of stylishness and horticultural excellence. It’s a large greenhouse that combines charm and functionality.

            From the first glimpse, the 8x20 Grand Gardener Greenhouse demands admiration for its distinctive barn-style structure and elegant windowpane aesthetics. Designed for enduring appeal, its strong frame and shatter-resistant polycarbonate panels create a secure refuge for your vegetables and flowers. The sturdy, all-weather, and UV-resistant extruded resin frame, enhanced with aluminium roofing, provides superior insulation and resilience against varying climates.

            Delight in the splendour of your greenery through the clear polycarbonate walls. The twin-wall roof adeptly tempers more than 90% sunlight for even light distribution. The ingenious design soars with a roof that affords protection, generous headroom, and extended space for nurturing climbing plants.

            Practicality is key, evident in its sizeable double doors for easy access. The 8x20 greenhouse sustains ideal cultivation conditions, courtesy of optimal airflow from roof vents, indispensable for temperature equilibrium with the doors sealed.

            Attuned to gardeners' preference for simplicity, this model features an uncomplicated pin-and-lock system, marking it as the go-to option for those who prize simplicity, productivity, and visual appeal.

            Its UV protected resin composition rivals the robustness of metal, and its specific rubber sealing fosters superior insulation. Engineered for harsh weather, this large polycarbonate greenhouse stands resilient under substantial snow loads (15.4 lbs/ft) and winds up to 56 mph.

            And installation? It's a breeze with the greenhouse's push-fit assembly; no specialised tools are necessary, guaranteeing a hassle-free setup process.


            After Care - Maintenance free

            Amount of Light Transmission -  Walls 90% light transmission - roof panels 90% light transmission

            Roof Style - Barn Style

            Roof Vents - 4

            Lock - Handle and holder

            Wall Glazing - Clear polycarbonate

            Roof Glazing - Twin-wall polycarbonate

            Frame - Heavy-duty 100% UV-protected extruded resin frame 

            Snow Load -  90 kg/m² (15.4 lbs/ft) 

            Wind Resistant - 75 km/h (56 mph)

            About Your Order:

            Palram Canopia plastic garden buildings and polycarbonate greenhouses offer a hassle-free experience. A straightforward assembly experience is on offer, with all the necessary fixtures and fittings included to ensure a smooth set-up. You'll be pleased to know that there's no need for tools, making the assembly process even simpler. All products include comprehensive, easy-to-follow instructions to guide you every step of the way.

            Please note: Images may depict furnishings and accessories; these are for illustration purposes only and are not included with your order. 

            Plastic Greenhouse Maintenance

            With its durable polycarbonate panels and heavy-duty resin frame, this product is expertly designed to be maintenance-free. The only upkeep you'll need to consider is the occasional cleaning, ensuring longevity and ease of use for years.

            About Palram

            Since its inception during the plastic boom of the mid-1960s, PALRAM has evolved into a leader in the thermoplastic industry through over 50 years of innovation and research. Palram - Canopia, a branch of the PALRAM Group, utilises these top-tier polycarbonate and acrylic panels to craft a diverse range of Polycarbonate Garden Structures. 

            With Palram-Canopia, bring the strength and sophistication of advanced materials into your garden. More than just expert producers of high-grade plastics, they are passionate creators of outstanding plastic garden buildings, including greenhouses, plastic sheds, patio covers and gazebos.


            ALL DELIVERIES ARE DELIVERED TO KERBSIDE OR DRIVEWAY. This product is delivered flat packed, direct to your home and is supplied with a set of instructions to support assembly.

            Our telephone lines are exceptionally busy to avoid queuing you can use the ‘Help’ facility which is on every product page.

            To protect both you and our drivers, we request that you remain within your property while they complete the delivery.

            Booking Delivery

            Your order will be dispatched by the manufacturer Palram Applications. If you have ordered more than one item, they may arrive at different times.

            Our teams are working hard to ensure your order is delivered within the timescale indicated on the product page. For customers in certain areas (e.g. Scotland and Wales) the timescale for these areas will be extended by up to 10 working days (this may be longer during peak times). Please note lead times are counted in working days (Monday – Friday) excluding Bank Holidays.

            Postcodes with extended leadtimes: AB, DD1-7, DD8-11, FK18-21, G84, HS1-8, HS9, IV1-20, IV21-26, IV27, IV28, IV30-36, IV40-63, KA27-28, KW1-14, KW15-17, PA20, PA21-38, PA41, PA42-49, PA60, PA61, PA62-76, PA77-78, PA80, PH1-5, PH6-29, PH30-35, PH36-39, PH40, PH41-44, PH45-50, ZE

            Prior to Delivery

            With Palram products, you will be sent two text messages. The first message will inform you that your order is being processed. The second message will be sent closer to the end of the delivery timescale, advising you that your order has been dispatched and will be delivered by one of two couriers (TNT or DX).

            Please note that both elbec and Palram will be unable to supply any further information on your order during this timescale. 

            Upon Delivery

            Your order will be delivered kerbside or on your driveway. Due to health and safety, and insurance liabilities, the driver will not be able to take your goods to the back of your property but – upon request – may place the product at the side of the house if there are no access issues. This is to avoid risking damage to your property while delivering to an unsafe location. We will not be able to go through your property.

            We recommend against arranging for a third party to install the product before its delivery and checking that all parts are present, and we cannot be held liable for any third-party costs caused by delays.


            Please note: all imperial measurements are approximate, and the Palram Polycarbonate Greenhouses are made from metric measurements. We would recommend that the base is at least 50mm bigger in each direction.

            Product Name:
            8 x 20 Palram Canopia Grand Gardener Polycarbonate Greenhouse in Green
            Colours Available:
            Exterior Width (Door Side):
            2.65m (8'8")
            Exterior Length:
            6.37m (20'11")
            Interior Width:
            2.44m (8'0")
            Interior Length:
            6.17m (20'3")
            Footprint Width:
            2.59m (8'7")
            Footprint Length:
            6.37m (20'11")
            Ridge Height:
            2.38m (7'10")
            Eaves Height:
            1.55m (6'1")
            Roof Type:
            Barn roof
            4mm twin-wall polycarbonate panels
            Extruded PVC Resin & Aluminium frame
            0.7mm crystal clear polycarbonate panels
            Extruded PVC Resin & Aluminium perimeter base
            4 x manual opening roof vents
            Integrated Guttering:
            Low Threshold Entry:
            Double hinged door
            Door Height:
            1.92m (6'4")
            Door Width:
            1.18m (3'10")
            Door Lock:
            Lockable door handle
            Door Handle:
            Self-Assembly - no tools required
            Optional Assembly:
            Manufacturer's Guarantee:
            7 Year Defects and Workmanship Warranty
            Product Code:
            Manufacturer's Product Code:
            EAN Number:
            Palram Applications
            Country of Origin:
            Click to View Alternative Sizes:


            The Canopia Grand Gardener Polycarbonate Greenhouse offers an ideal environment for cultivating vegetables throughout the year. This quintessential barn-style greenhouse features spacious double doors, a durable, heavy-duty resin frame, and polycarbonate window panels. Top features include:

            • Maintenance free design
            • Virtually unbreakable polycarbonate panels
            • Heavy-duty 100% UV-protected resin frame with rubber sealing strips
            • Double door for easy access
            • Twin wall roof panels to diffuse sunlight
            • Clear wall panels provides over 90% light transmission

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