Swallow Mallard 8 x 20 ft ThermoWood Greenhouse
We are committed to Low Prices.
If you find any of our products on the price promise pages advertised, and in stock and immediately available, at any of our competitors we will endeavour to match the price.
The T-shaped 8ft x 20ft Mallard greenhouse will make a magnificent addition to your garden. It's classically styled and built to last with highly durable Thermowood®.
Thermowood is Scandinavian timber which has been heat treated to remove moisture, it has minimal expansion and shrinkage, and therefore is highly unlikely to warp. The wood is also rot-resistant and doesn't need to be treated with preservatives, making it ideal for long term use outdoors.
Four opening vents create a lovely flow of air that your plants will certainly appreciate, and 3mm toughened real glass glazing lets in masses of light. Inside you'll find two front returned stagings as standard, although more for the rear can be added, as well as shelving throughout.
The greenhouse that's illustrated is sited on a dwarf wall however as standard the building is constructed on a boarded base. Both are very attractive and are designed to support your garden preferences.
Read up on our guide for the benefits of Thermwood® greenhouses.
- Available with Boarded Base or Dwarf Wall-Ready
- Crafted from Heat-Treated (Thermowood) Scandinavian Red Wood Pine
- Rot, Warp & Shrink Resistant Properties
- Real 3mm Toughened Glazing Panes
- Single Door Entry with Mortice Lock
- Ridge & Top Vent Capping Seals
- Stainless Steel Nails & Silicone Sealant
- Includes 6 Roof Vents
- Includes 6 Automatic Roof Openers
- Includes Left & Right Front Staging
- Includes Damp Proof PVC Floor Membrane
- Includes Delivery & Installation
Please Note: Imagery may show this model greenhouse in a different size and with optional extras that must be purchased separately. A suitable flat, level and sturdy base must be prepared before the delivery and Installation date to ensure a hassle-free installation.
|Door Opening Height:||198cm (6ft 6in)|
|Door Opening Width:||57cm (1ft 10in)|
|External Height To Eaves:||173cm (5ft 8in)|
|External Height To Ridge:||266cm (8ft 9in)|
|Glazing Bars:||58mm x 34mm|
|Greenhouse Depth:||266cm (8ft 9in)|
|Greenhouse Width:||609cm (20ft)|
|Nominal Size:||8ft x 20ft|
|Porch Depth:||74cm (2ft 5in)|
|Porch Width:||204cm (6ft 8in)|
Select Your Options
Design: Standard or Dwarf Wall
Swallow GB Greenhouses have the option to be built as a Standard design or onto a Dwarf Wall.
If you decide on the Dwarf Wall version, a wall height of around 607mm will need to be built beforehand by yourself, in which a wall plan will be sent to you in advance to pass onto your builder in order to construct the wall to the correct dimensions.
Once delivered, your Greenhouse will then be Installed to sit on top of the wall if this option is chosen.
Would you like your Greenhouse Painted?
Your Swallow Greenhouse frame can be painted in a multitude of colours at a small additional cost to perfectly match your outdoor space.
Your greenhouse will come as standard in a ThermoWood® none painted finish for no extra cost.
You may also have your greenhouse come in a ThermoWood® Oiled Finish to prevent fading, watermarks, mould, water ingress and dirt marks.
Alternatively, you can choose from a variety of ThermoWood® Painted Finishes using an opaque acrylic protective topcoat that has resistance against bacteria, mould and UV rays.
Design: Appearance Additions
Would you like to add any of the below accessories to your greenhouse?
Would you like to add Extra Staging?
Your Swallow Greenhouse already comes complete with a set of staging at the front as standard, however you may also add an extra unit at the rear to create a larger work and storage area.
Would you like to add a High Level Shelf?
High-level shelving offers an invaluable storage space for starting off seedlings and general storage of seed packets, gardening tools and gloves, reference books etc.
Design: Porch Extension
Increase the porch length from the standard 2ft 5ins depth to 4ft 5ins or 6ft 6ins depth.
Design: Porch Extension Shelving
If you're having your porch extended and also purchasing high-level front returned shelving, you will also need to choose this option to ensure that the shelving is extended to the depth of your extended porch.
Would you like to add a Rainwater System?
The Hunter Gutter and Downpipe Rainwater System allows you to collect and re-use rainwater - the very best water for all your plants. This guttering system comes included with this Greenhouse model, so please choose your required colour option.
Please choose a Delivery option -
Fast Free Delivery within Mainland England and Wales.
Inclusive delivery and installation are limited to mainland England, Wales and Scotland up to a maximum of 15 miles further North of Glasgow.
Unfortunately, Swallow greenhouses cannot be delivered and installed to areas of Scotland above 15 miles North of Glasgow or the Scottish Highlands free of charge, so additional costs would apply as detailed in the options above. Delivery and installation can't be carried out to Offshore Islands and Isles, Northern Ireland, or the Republic of Ireland.
Delivery will typically be made within 5 - 8 weeks for standard Thermowood, Oiled frames, and Painted greenhouses frames to the majority of locations upon ordering, and after confirming that your base area is prepared and ready for installation of your new greenhouse.
*Note: Some delivery locations such as Scotland, Devon, and Cornwall, as well as Ilfracombe, Exeter and anything West off unfortunately currently have extended delivery timeframes due to the additional distance required for the delivery and for our installation team to travel. This can be up to an additional 4 weeks on top of the standard quoted lead times.
All Swallow greenhouses are crafted to order, so maybe extended during busy times of the year.
Bespoke Product Procedure
This product range is made to order on an order-by-order basis, therefore is exempt from our usual cancellation and returns policy. Any cancellations after your order has started production may not be able to be cancelled or may be subject to cancellation charges. Although a very rare occurrence, this does not affect any orders that arrive damaged or faulty, whereby our normal terms on receiving a faulty product will apply.
Vehicles We Use
Items will be delivered on larger lorries which can get to most places it's typically, a 7.5-ton lorry which is about the size of a dustbin lorry, this will depend on the item that is being delivered and should you have any concerns with restricted access to your property we ask you to contact us prior to placing an order.
Unloading Of Your Delivery
Back garden access is required from the front of the property, as due to the size of the product and the large sections that they are delivered in, the installation/delivery team are unable to carry these items inside your home as the sections are unlikely to pass through standard indoor door sizes. When the item is delivered on a pallet, the pallet and packaging are non-returnable. Goods can only be maneuvered on a flat and level surface (i.e. not a gravel driveway) by a pallet truck. If the installation/delivery team is unable to gain access to the installation area from the front of the property, they may not be able to complete the installation, and a cancellation or rebooking charge may apply.
A suitable, flat, and level base must be prepared prior to the arrangement of delivery and installation, which can affect the delivery and installation timeframe - so please ensure that this is pre-prepared as soon as possible so that your greenhouse can begin production. The installation team will contact you approx 3 weeks in advance and will request a photo of the proposed installation area before being able to confirm a delivery and installation date. This is to ensure that the area is ready and suitable, ensuring successful installation on the day.
There are currently no reviews for this product. Please help us and others by writing a review.Review This Product
Have a question for this product? Go ahead and ask us! We try to reply within a few hours but it may take longer on some questions.Ask us a Question