Description
ENVI XL Briquettes – Extra-Large Hardwood Blocks for Large Stoves
ENVI XL briquettes are extra-large, clean-burning hardwood blocks designed for big, hungry stoves. Their size and density provide a long, hot burn, helping to reduce how often you need to add more fuel.
Each block weighs approximately 2.7kg and cannot be broken, so check the measurements carefully before ordering. ENVI XL will be too large for many smaller stoves.
Quick facts
- Three briquettes in each 8.2kg pack
- Approximately 25.4cm × 10cm × 10cm
- Approximately 2.7kg per block
- Heat output of 4.8kWh/kg
- Less than 8% moisture
- Less than 1% ash
- Little to no expansion while burning
- Made from oak and hard maple sawdust
- No artificial additives or binders
What quantities can I order?
ENVI XL briquettes are available in the following quantities:
- Quarter pallet: 26 packs – approximately 213kg
- Half pallet: 52 packs – approximately 426kg
- Three-quarter pallet: 78 packs – approximately 639kg
- Full pallet: 105 packs – approximately 861kg
- Mix Your Own Pallet: Individual 8.2kg packs
There are three ENVI XL blocks in each pack.
Delivery to most UK mainland postcodes is included in the pallet prices shown.
Please note that the full pallet weighs more than 720kg and cannot be delivered on a smaller 7.5-tonne vehicle. It requires suitable access for an 18-tonne delivery vehicle.
Before ordering, please read our pallet delivery information. If you’re unsure whether an 18-tonne vehicle can reach your property, call us on 01387 731 210 and we’ll be happy to help.
What are ENVI XL briquettes made from?
ENVI XL briquettes are made from clean, kiln-dried oak and hard maple sawdust.
The sawdust comes from sustainably sourced hardwood and is a by-product of timber prepared for other industries. Trees aren’t felled specifically to produce these briquettes.
They contain no chemicals, additives or artificial binders. The untreated wood by-product is held together by compression alone.
What are ENVI XL briquettes like to burn?
ENVI XL provides a long, hot burn once the fire is properly established.
The large, dense blocks have little to no expansion and continue producing useful heat as they burn down. They’re designed to reduce the need to keep adding fuel to a large stove.
Actual burn time will depend on your stove, chimney or flue, and airflow settings.
Which stoves are ENVI XL suitable for?
ENVI XL is designed for large stoves that need plenty of fuel. We find these briquettes are generally best suited to stoves rated at 5kW or more.
They’re unlikely to fit into a stove rated at 4kW or less, although firebox sizes vary between appliances. Always check the block dimensions against the available space inside your stove before ordering.
If ENVI XL is too large for your appliance, the smaller ENVI8 briquettes may be more suitable.
You can also try our Wood Briquette Finder if you’re unsure which briquette will suit your stove.
Can ENVI XL briquettes be broken?
No. ENVI XL blocks are extremely dense and cannot be broken into smaller pieces.
Each block measures approximately 25.4cm × 10cm × 10cm. It’s important to check that a complete block will fit comfortably inside your firebox before placing an order.
Can I use ENVI XL in a small stove?
No. ENVI XL isn’t suitable for most small stoves.
Because the blocks cannot be broken, they need a large enough firebox to accommodate their full size. For a smaller appliance, choose a more compact briquette such as ENVI8.
Don’t try to force an ENVI XL block into a firebox where it could touch the stove glass or restrict the safe movement of air around the fuel.
What is ENVI XL best used for?
ENVI XL is particularly useful when you want to keep a large stove running without having to add smaller pieces of fuel frequently.
The briquettes are well suited to:
- Large stoves rated at approximately 5kW or more
- Producing long-lasting heat
- Maintaining an established fire
- Reducing how often fuel needs to be added
- Larger appliances that burn through smaller briquettes quickly
- Retaining heat for an extended period
How do I light ENVI XL?
ENVI XL is a large, dense fuel and is best added to a properly established fire.
Start the fire using a natural firelighter and dry kindling. Allow a strong flame and a good bed of hot embers to develop before adding an ENVI XL block.
Make sure there is enough room around the block for air to circulate. Follow your stove manufacturer’s instructions and take care not to overfill the firebox.
Can ENVI XL be used for overnight burning?
ENVI XL can be suitable for overnight burning in some stoves. Its large size and density provide a long burn, and some appliances may retain useful heat overnight.
Results will depend on the stove, chimney or flue, and airflow settings. We don’t recommend trying to extend the burn by closing the airflow too far and allowing the fuel to smoulder. Smouldering produces more unburned particulates and isn’t good for your stove, flue or the environment.
Always operate your stove in accordance with the manufacturer’s instructions.
Do ENVI XL briquettes expand while burning?
ENVI XL briquettes have little to no expansion while burning.
Even so, make sure each block fits comfortably inside your firebox and isn’t positioned against the stove glass. Leave enough room around it for air to circulate and for the fuel to burn safely.
Technical details
- Composition: Mixed hardwood sawdust – oak and hard maple
- Calorific value: 4.8kWh per kilogram
- Maximum water content: Less than 8%
- Maximum ash content: Less than 1%
- Product standard: Lacey Act
- Block size: Approximately 25.4cm × 10cm × 10cm
- Weight per block: Approximately 2.7kg
- Pack contents: Three blocks
- Pack weight: Approximately 8.2kg
- Expansion: Little to none
- Suitable stove size: Generally 5kW and above
- Packaging: Plastic-wrapped pack
How should ENVI XL briquettes be stored?
ENVI XL must be kept completely dry.
A dry garage, watertight shed, porch, conservatory or dry outbuilding is suitable. The packs can also be stored inside your home or in a watertight plastic garden store.
Don’t keep them in a traditional open-sided log store, an uncovered outdoor area or a damp building. Briquettes are already very dry and readily absorb moisture. If they become damp, they’ll begin to expand and can eventually turn back into sawdust.
Is the packaging waterproof?
No. ENVI XL packs are wrapped in plastic, but the wrapping may have small gaps and shouldn’t be treated as waterproof. Its purpose is to hold the blocks together rather than protect them during outdoor storage.
The complete pallet is also plastic wrapped for protection during transport. This provides some temporary protection from poor weather during delivery, but it isn’t suitable for outdoor storage.
Please make sure you can move the packs under cover when they arrive. Check with your local authority to find out whether the plastic packaging can be recycled in your area.
Is delivery included?
Delivery to most UK mainland postcodes is included in the pallet prices shown. Some mainland and offshore addresses carry an additional surcharge, which you can check using our postcode and delivery information.
Your order will be delivered by our pallet courier, Palletline, rather than by one of our own vehicles. Delivery normally takes three to five working days for most areas, and someone must be there to receive it.
How will my pallet be delivered?
Delivery is made at the kerbside using a tail-lift vehicle and pallet truck.
The pallet footprint is normally approximately 1.2m × 1m. The driver needs a firm, flat and level surface on which to unload. A pallet truck can’t move safely over gravel, grass, slopes, steps or uneven ground.
Deliveries are normally made on an 18-tonne lorry. As a rough guide, if a bin lorry can reach your property, an 18-tonne delivery vehicle should be able to as well. The driver will make the final decision about whether it is safe to enter your road.
The pallet will normally be left at the kerbside or where your bins are placed for collection.
What if access to my property is restricted?
If you need a smaller 7.5-tonne vehicle, your order must weigh no more than 720kg.
A quarter, half or three-quarter pallet of ENVI XL can be carried on a 7.5-tonne vehicle. A full pallet weighs approximately 861kg and requires suitable access for an 18-tonne vehicle.
A 7.5-tonne vehicle is the smallest delivery vehicle we can request. If you need one, select the Access Restrictions option at checkout and add a note asking for a 7.5-tonne vehicle.
Why choose ENVI XL briquettes?
ENVI XL is made for large stoves that burn through smaller fuels quickly. Each substantial hardwood block provides a long, hot burn and can reduce the need to keep adding fuel.
The briquettes are made from clean oak and hard maple sawdust without artificial additives, chemicals or binders. They produce less than 1% ash and have little to no expansion while burning.
Just remember that ENVI XL blocks cannot be broken. Check their dimensions carefully against your firebox before ordering.






