Suitable for smaller round flues with a diameter of of between 7″ and 9″ (17 – 23cm) or square flues with a corner to corner length of 10″ (25cm). It comes with a 150mm / 6″ extension rod (total handle length is 300mm / 12″). Use this one for standard 9″ round flues.
Don’t forget that the Chimney Sheep® size should be slightly bigger than the chimney flue. If you are unsure of how to measure your flue and choose the correct size take a look at the How to Use page and the Sizing Chart.