RUF briquettes are a top of the range, extremely dense and very clean hardwood RUF Block. They’re made from pure Oak sawdust which is by-product from a furniture manufacturer. These are the best RUF Briquette we have ever found. These easy-to-use briquettes give out a steady heat with a nice flame. They burn for around two to four hours depending on airflow and they give off good heat for the duration of their burn time. Perfect for: RUF Oak are best used as a ‘heat sink’ in the back of the fire, where they will glow for several hours and help create a really good heart in your fire. Having said that though, many people use RUF Oak as a sole fuel throughout the burn. They are a handy size so they’re excellent on a smaller stove or open fire, but they’re still chunky enough to give a really good burn time. RUF briquettes are made in square shape usually, and have the same functinos of other models. Easy stacking and handling, and can be made by different materials. It contains more moisture than the others and also creates more ash. So packing is very important question. Our company produces RUF briquettes from 85% of conifers (pine, spruce). We take special care on Briquettes packaging. They are packed in plastic bags with vacuum. On each and every pallet there is a page with total amount of briquettes, gross and net weight. It is 100% ecological, no added glues or chemicals.