Hive Mats (or inner covers) eliminate your bees from propolising the roof down and building burr comb above the frames. Most people are in the habit of simply using a piece of lino, which means no bee space left on top of the frames. This method will work, but your bees will lose efficiency and potentially create ‘transit holes’ at the top of the comb as they are only able to travel over 3 sides of the frame. Made from 4.75mm Smooth “tempered” Hardboard with a 21.5mm wooden frame. Also acting as a great insulator, the Hive Mat is an essential part of every hive.