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Extension Kit for Slot Down Compost Bin

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Perfect for the larger garden.

Slot Down Compost Bin Extension Kit


Size (cm): 82×106×106
Weight: 32.0 kg

Not available

Extension Kit for Slot Down Compost Bin

Perfect for the larger garden.

The Slot Down Compost Bins are perfect for the larger garden where a large bin is required, or where more bins are needed to maximise the amount of compost made.

This extension kit allows you to add an additional bin onto your existing Slow Down Compost Bin.

Please note this is the Extension Kit Only and will therefore require you to either already have the Slot Down Compost Bin, or to purchase it at the same time.

Each extension kit contains two posts and 3 sides to slot into the side of the original 4 sided compost bin.

The rough sawn nature of the timber allows the composter to blend perfectly into any garden.

To access your mature compost, simply remove the individual sideboards.

You can use 1 or 2 extensions to make a double (as shown in the drawing) or even triple compost bin.

The compost bin and its extensions have been pressure treated and has a 15 year guarantee.

If you require a smaller compost bin, the beehive compost bin is also available.

Please note however we are unable to offer delivery of this item to addresses in the Scottish Highlands and Islands, Northern Ireland, Chanel Isles, Isle of Man, Scilly Isles and Isle of Wight and other areas outside UK mainland.

Product Specification

All fixings and instructions are included for easy self-assembly. You will need a hammer and a drill/pozi drive screwdriver.

Each bin holds around 650 litres.

Total height of posts: 120cm
Thickness of side wood 16mm

The slotted posts are longer in length to enable you to fix them into the ground and secure into place. Please note the posts have flat ends as per the drawing.

Simple assembly is required, all fixings and instructions included.

The colour will fade over time to a honey brown. However if you wish to stain the compost bin in your own colours this should be done immediately following manufacturer's instructions.

Items which are designed to be in ground contact are pressure impregnated with Osmose Naturewood preservative*, an effective method used to preserve wood against fungal decay and insect attack.

*Osmose is a trusted name in wood preservation and supplies preservative products to a worldwide market. A decorative dye is added to the preservative process to ensure every piece of timber is coloured and preserved in one operation. Osmose Naturewood is a timber preservative which contains copper and an organic co-biocide (3% copper and quat with approx. 97% water, approx. 0.8% Dye and Mouldicide less 0.1 %).

Delivery Information

Restrictions: Note that this item can only be delivered to mainland UK addresses*. 

PLEASE NOTE: Unfortunately due to the Covid 19 restrictions there are some postcodes we are unfortunately unable to deliver to, please see below. If you have any queries please do not hesitate to ring 0345 6052505.


 Due to issues at the factory related to the Covid-19 pandemic, this item is not currently available/we are not confident of consistent supply of the item. Please email customer service to be put on a list to be contacted when it is available again.
See the availability date below the item information panel. We currently aim to deliver your order within 7-10 working days. We will contact you within 48 hours after ordering via email or telephone to offer you a choice of delivery days. Don't forget to add any delivery notes at the checkout if your property is hard to find.

Please Note: We are unable to offer a next day service on these items and delivery is to kerbside only.

Further Information for Installations Only: Please note that all installations have been suspended due to the Covid 19 restrictions and will resume as soon as we are able, but please contact us if you have any queries 0345 6052505.

If you have chosen an installation option, this will typically take place within 7 days of delivery although this is currently suspended, see note above. We will contact you within 1 week after ordering via email. You will receive a pack to advise how to best prepare your base. Our installation team will contact you by telephone prior to delivery to agree on an exact installation date. Don't forget to add any delivery notes at the checkout if your property is hard to find or has difficult access.


• UK Express Delivery £6.50
• See Delivery FAQ's for more information.


For full information on returns see here.

Please Note
• Don't forget to add any delivery notes at the checkout if your property is hard to find.
'*Please note Home Delivery is unable to be offered for the following postcodes BT, GY, HS, IM, IV41-51, IV55-56, JE, KA27-28, KW15+, PA41+, PH41-44, PO31-41, ZE

and the following due to Covid Restrictions

BR8,CT1-21,DN18-20, DN31-41, DT3-7, EX1-24, EX31-39, HU1-20, LA1-23,LN7,12,13,PE25-,PE30-37, PL1-35,TA20-22, TN23-40,TQ1-14, TR1-120, TR26-27, YO11-18,YO21-22, YO25.

Whilst we aim to deliver within 7-10 working days there may be some instances where it may take longer, including Scotland, hard to reach locations or when items are out of stock.

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