If you are using burlap sacks in your Vivaldi Board, quilt board, or spacer shim, consider upgrading to the Burlap Insulation Bag. Our Burlap Insulation Bag is made of new burlap and contains pure pine shavings from our wood shop. They perform much better at insulating and wicking moisture than ordinary burlap sacks. These bags can be configured to fit both 8 & 10 frame Vivaldi boards.
In some cases you might decide to remove some of the shavings to get a good fit in your setup. Ideally, the bag loosely fills the space. You do not want to compress the shavings as this will reduce the insulation and wicking performance. Each bag is filled approximately half way with pine shavings, with the top half folded over. This is sufficient to both keep the shavings in the bag, and allow for reshaping to get an exact fit. When winter is over, the bags can be removed and reused or they make for great smoker fuel.
We ship these wrapped with a rubber band, but it does not need to be kept on.