Extension Kit for Slot Down Compost Bin

by Forest Garden

Extension Kit for Slot Down Compost Bin

by Forest Garden

  • £166.49
Perfect for the larger garden. read more

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.

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Height(cm) 82
Width(cm) 106
Depth(cm) 106
Weight 32.0 kg

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 %).

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Please see individual variant information for large item lead-times. We will contact you on receipt of your order to give you more precise information, and will contact you if there is any unexpected delay to this estimate. If you have any queries about any aspect of the range, please phone our help line on 0345 6052505 where we will be delighted to help you or if you prefer send us an email. 

Don't forget to add any delivery notes at the checkout if your property is hard to find!


Standard UK delivery charge £6.95
• Please note these heavy items are delivered to kerbside only, as the items with be delivered on a pallet.
• Check the availability date below the item price. This item will normally be despatched around that estimated date, in accordance with your delivery choice we will make specific arrangements with you.
• Next day or Saturday deliveries are not available on these items, so please do not select them as they may still be shown
• No Overseas Delivery on these items


For full information on returns see here.

*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

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