Mercia Traditional Lean To Greenhouse - 8 x 4ft

Mercia Traditional Lean To Greenhouse - 8 x 4ft

Product code
Mercia Traditional Lean To Greenhouse - 8 x 4ft is rated 2.5 out of 5 by 12.
  • y_2022, m_8, d_8, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.32
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_12
  • loc_en_GB, sid_216296, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_robertdyas
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getAggregateRating, 6.01ms
In Stock

FREE Delivery to most of UK Mainland

Online Exclusive
  • Overview
  • Reviews (12)
  • Delivery
  • Returns

Make the most of your garden and outdoor space with this traditional lean to greenhouse form Mercia Garden products.

The Pent Greenhouse is the ideal building for growing your plants in. This is an extremely well built, good quality building constructed using 12mm tongue and groove cladding, 44x28mm framing, fully glazed styrene windows, one skylight window, a doorknob and turn button latch.

The door panel can be fitted to either end during construction to ensure you make the most of your greenhouse.

(Please note: Images are dressed and painted for display purposes only. All listed metric dimensions listed below include the roof overhang.

Features and Benefits

  • Durable – This sturdy and strong garden building is constructed from robust timber and joints giving you a long-lasting and resilient structure.
  • Decorate yourself – Paint, stain or leave it natural, this greenhouse gives you the chance to customise it to how you want it.
  • Self-assembly – This is a two-person job but can be completed without any professional help needed. All assembly instructions are included.


  • 12mm Tongue and Groove Cladding
  • 44x28mm Framing
  • Fully Glazed Styrene Windows
  • One Skylight Window
  • Doorknob and turn button latch. 
Name 8x4 - Traditional Lean To Greenhouse



Base Width




Base Depth


Ridge Height


Eave Height


Internal Width


Internal Depth


Internal Ridge Height


Internal Eave Height



12mm Shiplap

Floor & Roof

Styrene Roof

Door opening width(All dimensions in mm


Door opening height (All dimensions in mm)


Lock type

Turn Button


Water Based Dip Treatment


10 Year Anti Rot - Requires annual treatment with a high-quality preservative that weatherproofs and protects against rot

Reviews (12)
Rated 2 out of 5 by from Not great quality and complicated to build Didn’t really expect to have to drill holes before putting product together Quality is poor - wood split in several places and a whole pack of screws were missing
Date published: 2022-07-28
Rated 5 out of 5 by from Very pleased with this greenhouse This greenhouse was delivered on time. I painted all the components with Cuprinol Shades before assembling it to make it easier. I really recommend doing that because it would be difficult to get to when built to decorate. I had to replace a few more minor wood components because they arrived damaged, but I didn't mind doing that. The assembly instructions were very good; really easy to follow.
Date published: 2022-07-06
Rated 1 out of 5 by from Definately not the best but ok for the cost Arrived 2 days late which ruined my weekend. Whilst the quality is not poor there is room for improvement. Like others say do not buy unless you are good at DIY and able to make it fit. Some wood untreated even although they say all pre treated, also had to buy additional wood to finish it off. My advice would be to pay a bit more and steer clear of Mercia Garden Products
Date published: 2022-04-22
Rated 5 out of 5 by from Exactly what we wanted. Very happy with this product. It was easy to assemble and looks great.
Date published: 2021-03-02
Rated 1 out of 5 by from Not too happy with the experience! The greenhouse was delivered, more like thrown from a distance. The delivery driver was off quickly. There was several parts of the wooden structure broken, and several panes of Styrene were broken. We also purchased a summer house from you last spring, where we had similar problems, mainly due to again the delivery people. The only redeeming factor was that the broken items were replaced, once I informed you of the damage. I am reluctant to recommend you to friends as your delivery team is the cause of the damage to my purchases in both cases.
Date published: 2021-02-14
Rated 2 out of 5 by from Missing parts and badly constructed bits It started off well. Delivery was incredibly efficient and it all looked great. Then I came to building it. The instructions aren’t brilliant, but with a bit of common sense you can work it out. Pieces were missing out of our order. I am in contact with the company to get those re-delivered. I have a feeling it happens regularly from the response I got. One part of the greenhouse was so badly constructed that I had to take it apart and re-make it myself. The crossbar was about an inch out at one end and a massive nail was sticking out where it should have been.
Date published: 2021-01-19
Rated 1 out of 5 by from Terrible product not for amatures! Terrible. Thank god I had professionals put it together. Wood splitting, nothing fitted properly. Took ages to work out what bit was what and most of the wood had to be cut to the right length. Plus additional wood had to be bought and a second door handle.
Date published: 2020-12-15
Rated 5 out of 5 by from Great product This arrived a lot sooner than I thought, Great service easy to order.
Date published: 2020-10-22
  • y_2022, m_8, d_8, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.32
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_12
  • loc_en_GB, sid_216296, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_robertdyas
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getReviews, 6.18ms

Vendor Direct Products:

This product is delivered by our approved supplier on a Standard Delivery Service.

Please be aware that we currently cannot arrange for delivery of this product to the following postcodes: AB, FK, HS, IV, KA, KW, PA, PH, ZE, LL58-LL78, IM, TR, BT, PO30-41.



In the UK you have a legal right, under the Consumer Contracts Regulations June 2014, to cancel your order within fourteen (14) days following your receipt of the goods. Refunds for orders cancelled under the provisions of the Consumer Contracts Regulations will be processed in accordance with your legal rights.

You may not cancel orders for the following types of products:

  • Electrical/Technical products which have been unsealed
  • Customised or bespoke Products
  • Anything of a nature that for hygiene or associated health and safety - this includes the Outdoor Spas, Mattresses and Divan Sets
  • Fresh food

Under the Consumer Contracts Regulations June 2014 you have a duty to take reasonable care of Products whilst they are in your possession. You will receive a full refund of the purchase price of the Products.

This is not intended to be a full statement of your rights under the Consumer Contracts Regulations. Full details of your rights are available from your Local Authority’s Trading Standards Office.

How To Return A Product

If you wish to return your item to Robert Dyas, you can do so by the following method:

1. Request a Collection via Robert Dyas Customer Services

Contact our Customer Services team on 0333 103 6677 (Monday- Friday 08:00 - 19:00, Saturday & Sunday 09:00 - 17:00, Closed Bank holidays. - call charges may vary by network) or via email to: customerservices@robertdyas.co.uk who will be able to arrange a collection for your item with the supplier. Please ensure that you provide your order number when contacting customer services.

If you are returning the item under your 14 day right to cancel, then a collection charge will be applied:

  • Products < 20kg: £7.50
  • Products > 20kg: £30

If you are not at home when we try to collect we reserve the right to deduct from your refund or charge your credit card the direct costs to us of the failed return in accordance with the Consumer Protection (Distance Selling) Regulations 2000.