For soil venting or mechanical extraction, attach the Dreadnought Tileline Adaptor and Flexible Pipe (supplied seperately) after installation of the ventilator. The Flexible Pipe is used to connect the spigot on the tile vent adaptor to the top of the stack pipe. High insulation requirements and changes in construction practices have produced increased condensation in the roofspace. This has led to the introduction of mandatory requirements for ventilation in the roof. The Dreadnought Ventilation systems are discrete and integrate seamlessly with the tiles and do not disturb the design of the roof. The ventilation products not only match the colour of the tiles, but also lie flush with the tiling or the ridge line. This is a discreet ventilator flush with the roof and designed to blend in to the rest of the roof. Sections of Dreadnought tiles are bonded to the leading edge of the tilevent in the same colour as the tiles on the rest of the roof to match in. It provides 7500mm2 of ventilation per tile vent and can be used with a pipe adaptor for joining to soil pipe or bathroom/kitchen extractor. Why Dreadnought tiles? Dreadnought Tiles are a British manufacturer based in Staffordshire where they have been manufacturing clay roof tiles using locally sourced Etruria Marl Clay for over 215 years. Etruria Marl (Staffordshire Clay) roofing products have unrivalled strength and durability (it is also used to make Staffordshire Blue Class A Engineering Bricks). All Dreadnought colours from blues, brindles and browns to reds are generated without the use of artificial stains or coloured sands; instead the colours are the product of careful control of the kiln atmosphere. This natural quality, which creates subtle colour variation within each tile, gives a unique quality to the Dreadnought product that enhances the appearance of any roof. Features Dreadnought are able to offer guarantees on request of 60 years on all of their roof tiles. Bespoke offering on Ornamental Ridge - allow 8 to 10 weeks. Bespoke feature/ornamental tiles - allow 8 to 10 weeks. Family owned business with a 200 year reputation for quality. List of projects for customers to visit roofs to confirm the appearance, quality and colour choice. A personal service to assist with samples, quantity estimates, colour matching and selection of ornamental element. Dimensions Length: 500mm To fit over 110mm outside diameter pipe.