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Description
Mercia Sherwood Harlow 4mx3m Insulated Garden RoomThe Harlow Insulated Garden Room (4m x 3m) is the perfect modern outdoor extensionideal as a garden office, gym, or studio. Featuring a bold geometric winged design, EcoQuilt insulation, double glazing, and a long lasting EPDM rubber roof, this all season garden room combines style with high performance. Built in the UK with sustainably sourced timber and customisable to your needs. Key Features 4m x 3m Contemporary Design Compact and stylish, fits
The Harlow Insulated Garden Room (4m x 3m) is the perfect modern outdoor extension—ideal as a garden office, gym, or studio. Featuring a bold geometric winged design, EcoQuilt insulation, double glazing, and a long-lasting EPDM rubber roof, this all-season garden room combines style with high performance. Built in the UK with sustainably sourced timber and customisable to your needs.
Key Features
- 4m x 3m Contemporary Design – Compact and stylish, fits most garden layouts
- Year-Round Comfort – EcoQuilt multi-foil insulation in walls, roof, and floor
- Double-Glazed French Doors & Windows – Improve thermal performance and natural light
- 50-Year EPDM Rubber Roof – Long-lasting waterproof protection
- Electrical Ready – Concealed cable management with removable inner wall panels
- Secure Build – Durable construction with high-quality materials
- Double Skinned Walls (72mm) – Improved structural integrity and insulation
- Sustainably Sourced Timber – Manufactured in the UK with eco-conscious practices
Specifications
| Specification | Details |
|---|---|
| Product Name | Harlow Insulated Garden Room – 4m x 3m |
| Treatment Type | Untreated |
| Installation | Fully Fitted |
| Guarantee | 10 Year Anti-Rot Guarantee |
| Cladding | Shiplap+ Tongue & Groove |
| Wall Thickness | 72mm Double Skinned with EcoQuilt Insulation |
| Roof Material | OSB & 12mm Tongue & Groove |
| Roof Covering | EPDM Rubber Membrane (50-Year Life Expectancy) |
| Floor Material | 16mm Tongue & Groove |
| Door Style | Double French Doors |
| Window Glazing | Double Glazed |
| Building Type | Garden Room |
| Available Variants | 3x4m, 4x3m, 4x4m, 5x3m, 5x4m, 6x3m, 6x4m |
| Customisation | Door/window placement, additional glazing optional |
| Manufactured In | United Kingdom |
| Timber Source | FSC-Certified, Sustainably Sourced |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 1
Lasted less than 60 seconds - 6 month puppy.
Flavor Name: Peanut Butter, Size: 4 Ounce (Pack of 1)
Lasted less than 60 seconds ! Stop calling a product a chew. When there is nothing lasting.
I should start returning products that are misrepresented. And stop reading reviews.
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Reviewed in the United States on February 6, 2026
★★★★★ 5
Great product
Oh my God, my dogs love these they inhale them, but I only give them one a day or even one every other day. It's perfect. It doesn't have ingredients in it that my dogs are allergic to like 99% of the treats and dog food have it so that's this is gonna be a definitely definitely thing that I'm gonna purchase for them.
My dog is allergic to furrous sulfate and why people put this in their animals foods I don't know, but they need to stop really putting things in it that doesn't really be necessary. This is great has nothing in it so hundred percent matter fact I'm reading it right now. It was for small dogs, medium dogs and large dogs. Well my dog's 130 pounds. The other one is 190 you cannot give this to puppies under three months old I don't know why but one thing is the package itself doesn't save the ingredients. Maybe this is it biscuit chicken coconut, peanut butter, some kind of starch and sorbitol, but it's only 2% so it's not bad but that is unnecessary to put in any Dog or cat for that matters.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Correctly targeted by Amazon's suggestion
I didn't know my dogs were crackheads until they tried this. They absolutely loved them. Even my 16 year old RUNS to get them. Definitely 5+ stars.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
TheBizg
The dog'o is happy
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Reviewed in the United States on June 1, 2026
★★★★★ 4
Tasty treat but better as a quick reward than a long chew
I gave these to my German Shepherd and Lab as occasional treats. They were immediately interested and finished them quickly, which usually means they’re both appealing and easy to eat.
These aren’t long-lasting chews—they’re more of a quick snack. For larger dogs especially, they won’t keep them occupied for very long.
Compared to tougher chew options, these are better suited for training rewards or short treat sessions.
I’d rate them 4 stars. Good flavor appeal, but not designed for extended chewing.
Tip: Use them as a reward treat rather than something to keep your dog busy.
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Reviewed in the United States on April 5, 2026