The Heritage Rangehoods are timeless traditional canopies. They are made to be wall mounted and available different sizes to suit cooking appliances underneath. The Heritage Rangehoods come with a stainless steel flue, which is available in several standard sizes. Longer flues and made to measure sized flues can also be manufactured as a custom flue order. Recommended installation heights above the cooktop is between 700-800mm. Flue size = Floor to ceiling height minus bench height minus install height minus rangehood body.  As a general rule, use the closest size rounding up. Standard Flue Sizes available:  600mm, 900mm, 1200mm and 1500mm.