Grains are a consistent fuel which provides a good level of warmth. Grains are for use in gravity feed appliances such as gravity feed boiler ranges. This fuel provides a low intense flame which burns for long periods of time. This fuel type is suitable for use in a smoke restricted area. Sold Loose so you will need a coalbunker for us to deliver into. Increasing Discounts on Orders over 10 Bags – Call for our best price!