Detailed Specification

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

Product Name: 8 x 4 (2.49m x 1.35m) Mercia Premium Lean-To Greenhouse
Footprint (Depth x Width): 2.46m x 1.32m (8'1" x 4'4")
Height to Ridge: 2.08m (6'10")
Height to Eaves: 1.80m (5'11")
Walls: 12mm Shiplap
Framing: 27mm x 44mm (11/10" x 1 47/64")
Door: Single Door (can be located on either the left-hand side or the right-hand side 4ft side)
Door Opening (Height x Width): Approx 1.72m x 0.60m (5'8" x 2'0")
Door Lock: Lock and key mechanism
Roof Type: Lean-to / Pent
Roof: UV Resistant Shatterproof Styrene
Roofing Felt: N/A
Floor: N/A
Floor Joists: N/A
Floor Joists Direction: N/A
Window(s): 10 Fixed Windows and 1 Opening roof vent
Window / Wall Panels: Fixed
Window Glazing Material: UV Resistant Shatterproof Styrene
Windowless Option Available: N/A
Treatment: Dip Treatment
Portabases Available: N/A
Manufacturer's Guarantee: 10 Year Anti-Rot Guarantee
FSC Certified: Yes
Free Delivery: Yes*
Assembly Available: Optional
EAN Number: 5029442076096
Recommended Treatment: Protek Range** (please click here)
Manufacturer: Mercia Garden Products



** We offer a selection of Protek paint within the options section of this product page. If selecting from this product page the treatment will be sent with your order. If ordering from the Full Protek Range link the treatment will be sent separately.


Those who want to get started on gardening projects without the fuss of an expensive, free-standing garden building will love the flexibility of this 8 x 4 Mercia Premium Lean-to Greenhouse. This timber greenhouse is suited to more confined outdoor spaces, thanks to its relatively "shallow" footprint, and is designed to be placed against a solid wall. With its robust shiplap cladding and timber frame, the lean to greenhouse is sure to become a prized feature in any garden for many years to come.  Depending on where you would like to position the Mercia PremiumLean-To Greenhouse the door can be located on either of the 4th sides.


The seven glazed panels featured in this greenhouse use a clear styrene material that help create the perfect growing environment by flooding your greenhouse with natural light. This styrene is UV-resistant and shatterproof, making it a safe alternative to glass as well as helping you save - exactly what owners need in bustling family gardens.

The timber used on the lower side walls is in the form of a 12mm shiplap tongue and groove cladding, with each piece of timber interlocking to produce a structure with great overall strength and protection against the elements. All timber used is sustainably sourced, with FSC certification. Although the timber in this greenhouse has been dip-treated prior to delivery for initial resistance to damage from rot, elbec suggests that you apply a high-quality wood preservative to the exterior of your greenhouse as soon as possible. The Protek range is an excellent way to do so, while giving you the chance to add unique character to your garden with a choice of many striking colours.

Accessing your plants is made easy, with a single door that is glazed to match the rest of the greenhouse. This door features a lock and key for integrated security, with an ornate handle to match the door's hinges. The ability to create a through-draught by opening this door and the manual vent in the pent roof is a huge benefit when it comes to lowering the temperature and humidity levels of the greenhouse. 

Additional Information

If you think that a Premium Lean-to Greenhouse would be perfect for you, take a look at our delivery information. If you would like any extra details, feel free to email us to discuss your order and our full range of product options, or better still, give us a call so we can find the perfect product to suit your needs.

Alternatively, why not visit us at our Brookfields Garden Centre showsite near Nottingham? One of our helpful advisors will be on hand to show you around or to help guide you through your order in person. Though if there is a particular garden building you would like to see, we recommend contacting us in advance to find out if we have it, or one similar, on site.

This greenhouse is supplied flat packed with instructions and all the fixings necessary to complete construction. The timber used is dip treated, which means it has been pre-treated with a base coat in a brown, industrial product. Please be aware that the colour may vary from any pictures shown. Dip treatment coats the surface of the timber and protects it during manufacture and transit, so you must apply a suitable water-based top coat yourself to ensure your anti-rot guarantee remains valid. You must make sure to follow all the manufacturer’s care instructions in order to maintain the validity of your guarantee - these guidelines will be outlined in the instructions delivered with your product. This will include instructions for periodically treating your timber – Mercia, the manufacturer, recommends Protek Paint, available to purchase from elbec in over 60 stains and colours.

Please note: some images may show this greenhouse decorated with accessories/furnishings. This is for display purposes only. Your order will not be delivered with any of the accessories/furnishings shown.

Key Features

  • Free UK mainland delivery*
  • Styrene glazing that is clear and shatterproof
  • 10-year anti-rot guarantee
  • Door can be located on either 4ft side
  • 12mm shiplap tongue and groove cladding on lower sections of walls
  • Glazed single door with lock and key
  • Pent roof with manual vent for improved ventilation
  • Robust timber framing
  • Dip treated timber for initial protection in transit and when assembling
  • 12 month manufacturer's warranty
  • UV protected glazing
  • Antique style hinges
  • Lock and key door opening


ALL DELIVERIES ARE DELIVERED TO KERBSIDE OR DRIVEWAY. All of our Mercia products are delivered flat packed other than fence panels (which are delivered fully constructed), direct to your home, and are supplied with a set of instructions to support assembly.

Booking Delivery

You will be required to book your delivery date at the time of placing your order (except for Metal Shed). Our 'Request a Delivery Date' service is available to the majority of areas and you'll find that the majority of the UK postcodes are FREE but some areas may incur a delivery surcharge and some postcodes are not covered at all. Select a 'requested delivery date' by entering your postcode in the 'Request a delivery date' section above. You will also be notified at this time if your area incurs a surcharge or delivery is not covered in your area.

Prior to Delivery

On the morning of your delivery date, you'll be sent an update by text with an estimated 2-hour delivery slot (this update can only be provided where a mobile number has been supplied on the billing address section at the time of checkout) together with a link to the manufacturer delivery portal where you'll be able to track your order.

Please note: Mercia Metal Sheds ONLY - your order is delivered by a courier you will not be notified prior to the delivery. If you are not in on the day of the delivery you will be carded and asked to contact the courier to arrange a new mutual delivery date. The estimated delivery lead time for Mercia's Metal sheds is identified on the product for the metal shed. Lead times are on working days (Monday - Friday) excludes Bank Holidays. These estimated lead times are provided by the manufacturer. Some remote areas will take a little longer.

Upon Delivery

Your order is delivered either kerbside or driveway and will be delivered on either a 3.5T, 7.5T or 18T Lorry. Unfortunately due to health and safety and insurance liabilities the driver will not be able to take your goods around to the back of your property but may upon request place the product at the side of the house if there are no access or restriction issues. We would not risk damaging your property whilst delivering a product to an unsafe location. Unfortunately, we will not be able to go through your property.

We would recommend against arranging for a third party to install the building before it's been delivered and checked that all parts are present, as we cannot be held liable for any third-party costs.


Orders with Assembly 

The lead time for our installation option is around 12 weeks from the date of order. With the installation option, the majority of orders will have their delivery and installation on separate days; there will be a small number of orders which will have delivery and installation on the same day. You will be advised by the manufacturer's installation team which category your order falls into.

Depending on the installation option for your order, you will be contacted within the delivery timescale and given a date for either delivery/assembly on the same date or a separate date for delivery and assembly.

8 x 4 (2.49m x 1.35m) Mercia Premium Lean-to Greenhouse

Was £639.99 Now £599.99
NEW - New
NEW - Guarantee - 10 year - gold

Product code - 20011009


Description Information

This 8 x 4 Mercia Premium Lean-to Greenhouse offers a space-saving solution to creating a greenhouse environment in your garden, and can be placed against 90-degree outdoor walls. If you want to allow horticultural projects to thrive, or simply keep potted plants away from the harm of winter frost, this timber greenhouse is a charming and affordable choice for any customer. Some features include:

  • 12mm shiplap cladding used for side walls and upgraded interior framing
  • UV-resistant styrene glazing, which is clear and virtually shatterproof, creating a safe environment that is perfect for growing
  • 10-year anti-rot manufacturer guarantee for all timber included in this greenhouse
  • Single door with glazing to match the rest of the structure, alongside a lock and key security mechanism

View full specification Delivery

Usually delivered: Use Pick A Day delivery below for your earliest delivery date to your Post Code.

Note: Currently not available for delivery to Offshore Post Codes.

excludes installation option
Choose additional options
Protek Wood Stain and Protector for Mercia Products
Protek Wood Stain and Protector 5 litres - Gun Metal Grey£29.99
Protek Wood Stain and Protector 5 litres - Chestnut£29.99
Protek Wood Stain and Protector 5 litres - Silver Fir£29.99
Protek Wood Stain and Protector 5 litres - Ebony£29.99
Protek Wood Stain and Protector 5 litres - Teak£29.99
Protek Wood Stain and Protector 5 litres - Sky Grey Blue£29.99
Protek Wood Stain and Protector 5 litres - Cornflower£29.99
Protek Wood Stain and Protector 5 litres - Dark Oak£29.99
Protek Wood Stain and Protector 5 litres - Clear Top Coat£29.99

Your choices:

  • 8 x 4 (2.49m x 1.35m) Mercia Premium Lean-to Greenhouse£599.99