SKU: 45120578053

Forest Garden Xtend Premium 4 x 3.42m Insulated Garden Office with 1/2 Window

Sale price$5882.39 Regular price$6535.99
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Description

Forest Garden Xtend Premium 4 x 3.42m Insulated Garden Office with 1/2 WindowForest Garden Xtend 4. 0M Premium Achieve your work life balance with the Xtend range of garden buildings from Forest Garden. These new buildings have everything you could wish for in a home office contemporary looks, real energy efficiency, ease of construction and keen pricing. Space is at a premium in most homes and extensions are costly. An Xtend garden building is constructed from high quality, energy efcient materials and is underwritten with a

Forest Garden Xtend 4.0M Premium

Achieve your work/life balance with the Xtend range of garden buildings from Forest Garden. These new buildings have everything you could wish for in a home office - contemporary looks, real energy efficiency, ease of construction and keen pricing.

Space is at a premium in most homes and extensions are costly. An Xtend garden building is constructed from high quality, energy efficient materials and is underwritten with a 15 year structural guarantee

Xtend is a clever choice for your garden building as it comes delivered in pre-cut modular SIP panels ready for assembly. Some of the best designed new homes are now made this way, so why not your new garden building? A step-by-step guide means the build is incredibly straightforward.

Keeping you warm in winter and cool in summer, Xtend delivers real energy efficiency. Double glazed windows, highly efficient insulated walls, roof and ?oor combine to drive down energy costs. It’s a fact that Xtend garden buildings can be as energy efficient as a new-build home – with an EPC energy rating of B.

Features:

STRUCTURAL INSULATED PANELS (SIPS)

  • The core structure of an Xtend building is made from SIPs panels - high performance material for building construction. The 21st century way to build
  • 9 7mm thick insulated walls consist of 75mm of polystyrene insulation sandwiched by two sheets of oriented strand board (OSB)
  • Gives structure and insulation in one pre-assembled and cut-to-size panel
  • Total wall thickness including SIPS panels, internal and external cladding and cavities is 177mm
  • Roof is 11mm OSB + 100mm insulation + 11mm OSB = 122mm total

External Cladding

  • Pre-cut external timber cladding panels for quick and easy assembly
  • No measuring and cutting every single batten and board to size before mounting
  • Cladding panels are simply positioned on the building and screwed into place
  • Panels are made with 15mm thick premium interlocking tongue and groove boards mounted to framing battens
  • Comes untreated and we recommend the application of any of the following:c
  • Sikkens Cetol HLS Plus • Restol Wood Oil • Timmersol ETS Double Protectant • Osmo Country Colour • Osmo Natural Oil Woodstain

Internal Cladding

  • Pre-cut interior MDF panels for quick and easy assembly for walls and ceiling
  • No measuring and cutting every panel
  • Wall panels are mounted to 28mm thick battens creating a cavity perfect for routing electrical wiring
  • Roof battens are 45mm thick to allow for recess roof lights
  • Comes with primer applied – can be painted in a colour of your choice using standard interior emulsion paint
  • The panel design has a vertical beaded profile
  • The floor is left unfinished for you to add your own choice of covering

Roof Covering

  • External roof covering is made from 1.2mm thick EPDM black rubber
  • It creates a maintenance free waterproof membrane
  • Does not crack, split or rot
  • Does not support moss or algae growth
  • UV stable & environmentally friendly
  • Safe and easy to install – the system is laid with cold applied adhesives (supplied)
  • One piece sheet means no joints and no leaks
  • 50 years roof life expectancy
  • Anthracite grey fascias include

Windows & Doors

  • Window material: uPVC 5 chamber
  • Window colour: Anthracite grey externally with grained finish Smooth white internally Window locking: Two double clasp, mushroom headed espagnolettes
  • Door material: uPVC reinforced 5 chamber
  • Door colour: Anthracite grey externally with grained finish Smooth white internally
  • Door locking: 7 point multi-lock with ultion three star security barrel
  • Glazing 28mm, A rated, double glazed, safety glass

Energy Efficiency

  • Highly efficient insulated walls roof and floor
  • Double glazed windows
  • Warm in Winter, cool in Summer
  • Energy efficiency model rating of 78 (category C)*
  • Potential to increase to 82 (category B) with the addition of a photovoltaic solar panel
  • *based on lighting from 3 x 4 watt LED bulbs and heat from a high efficiency wall mounted heat pump

Tech Specs:

  • Weight: 2400 kg
  • Dimensions: 342 × 404 × 250 cm
  • Construction Type: SIPs panels with external Tongue & Groove cladding/internal MDF cladding.
  • Roof Type: Pent
  • Treatment: None (Kiln Dried)
  • Colour: Natural Timber
  • Product Size (h x w x d) cm Overall dimension when assembled, including overhangs: 250 x 404 x 342
  • Width at base (footprint) (cm): 403
  • Depth at base (footprint) (cm): 304
  • Estimated Weight (kg): 2400
  • Material: Various – see spec breakdown.
  • Country of Origin: United Kingdom
  • Wall Cladding Thickness (mm): External 15mm / Internal 9mm
  • Door Type (single / double): Double
  • Number of Windows: 2 (opening)
  • Glazing: Yes – Double
  • Glazing Material: Glass
  • Roof Material Inner: SIPs panels
  • Roof Thickness (mm): 122mm
  • Roof Material Outer: EPDM Rubber Membrane
  • Floor Material: SIPs panels
  • Floor Thickness (mm): 108mm
  • Door Locking (eg: plate/wire hasp & staple): 7 point multilock
  • Home Delivery Lead Time: 3 weeks
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 45120578053

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4.7 ★★★★★
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Verified Purchase
MNKTJ
Boise, US
★★★★★ 5
Perfect, affordable solution for a second home-office setup
I work from home and occasionally like to office out of a different area of the house, but I didn't want to tear down my entire main rig just to move to another room. I picked this up as a secondary docking station for a more casual monitor setup, and it works perfectly for my needs. Setup & Performance: I have this hooked up to my work laptop and two monitors via HDMI. One thing to keep in mind: you’ll need to provide your own USB-C cable and power brick to juice it up. Just make sure you’re using a high-quality charging block to ensure the dock gets consistent power for all your peripherals. The Value: Compared to the price of a name-brand Dell docking station, the value here is incredible. While the more expensive docks might offer a few extra bells and whistles, this is exactly what I needed without the hefty price tag. Pros: Simple Setup: Very straightforward to get running. Dual Monitor Support: Handles two HDMI monitors with no issues. Compact: Great for a secondary or portable "mini" workstation. Bottom Line: If you’re looking for an easy, inexpensive way to run dual monitors from your laptop in another part of the house, this is the way to go. Great performance for the price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
C
Verified Purchase
CrankyToday
Birmingham, US
★★★★★ 5
Works well but pay attention **REVISED**
The device has worked well for me. However potential buyers should note that the 2nd USB C port is reserved for power input from a separately purchased power supply. So the device provides only a single USB C port for attaching devices. I use the device on power from my own computer. So undocking my computer requires some careful steps in the correct sequence: (1) eject all external drives; (2) power down the external display; (3) unplug Anker from computer; (4) remove power from the computer. The device comes at a great price, though, so excellent value. *REVISION* After four months of use, the HDMI port seemed to fail--the monitor was indicating that it was not connected. I wrote to Anker support and received a reply within two hours. The reply told me how to reset the docking station. It worked. Kudoes to Anker Support!
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Reviewed in the United States on September 15, 2024
C
Verified Purchase
Chris
San Leandro, US
★★★★★ 5
Quality multi display hub
Works as intended, good value for the money and reasonably sized. I am currently running two 4K HDMI monitors on it without an issue. Ready to go out of the box and has a sturdy design, would recommend.
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Reviewed in the United States on March 17, 2026
T
Verified Purchase
TAP
Pawtucket, US
★★★★★ 4
Anker support comes through
Update: Anker support contacted me and provided a new unit. On this one, the video works fine, both via HDMI and DisplayPort. I'm much happier now that the unit, which I do like, works properly. There is still one video-related quirk that can be annoying, though, if you often unplug the external monitor from the hub but leave the hub connected to the computer. When I unplug the external monitor from the hub, the hub doesn't tell the computer that the monitor is no longer connected (the same thing happened with the original faulty unit). Since the external monitor is my primary monitor when connected, this leads to an irritating set of steps ending up with disconnecting the hub. I reported this issue to Anker support and they forwarded it to their engineering group. Initial review: I like the form factor and the many connection options. They all work fine EXCEPT that the video (whether DisplayPort or HDMI) keeps dropping out. The computer (MacBook Pro M1 14" running MacOS 13.0.1) thinks the external monitor is there, but nothing shows on the screen for a few seconds, then it comes back on, then off again. Anker support says to try updating the firmware, but to do that requires a Windows computer with a USB-C port. I do not have access to such a machine, so I'm stuck. Since one of the primary reasons I want a hub is to handle the video, I have to return the unit. This is a real disappointment since I otherwise have been very happy with Anker products.
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Reviewed in the United States on November 29, 2022
S
Verified Purchase
SeedyROM
Belleville, US
★★★★★ 5
Incredible Quality, Incredible Results!!
AMAZING!! I use my Samsung Z Fold with a Maono Podcast Soundboard for podcasting. Having the phone charge from the soundboard power passthrough was inadequate to keep the phone charged, and generated "noise" in the path. I got the Anker 565 USB-C hub, and routed the power and signal through the Anker hub. WOW!! My phone remains fully charged throughout the podcast, there is ZERO "noise" in the signal, and I can actually do more than ever expected! The quality of Anker products has been proven with me Over and Over with every single product I have purchased. From high-end 240w USB-C cords, to Power Banks, Power Blocks, Bluetooth Earbuds & Headphones, across the board; I have never been disappointed! I highly recommend Anker, and specifically the Anker 565 USB-C hub!!
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Reviewed in the United States on November 8, 2025

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