Brown Double Roman Roof Tile Vent and Adapter Fits Marley, Redland, Russell, Lagan & Sandtoft Brown roof tile ventilator. In-line and discreet low profile design. For roof ventilation, extractor fans and soil pipe termination. Can be used with concrete and traditional clay tiles. Fully independently wind tunnel tested. Adapter converts to a round opening that can be attached to a soil stack or extractor fan with a 100mm - 120mm PVC hose. These vents are not a product of Marley but are designed to fit Marley products. Any use of brand names is to aid the search for Marley compatible tile vents.Kit Contents 1 x Tile vent 1 x Tile vent adapterTile Vent For use with: Marley Double Roman Redland Double Roman Sandtoft Double Roman Russell Double Roman Lagan Double RollTile Specification: Width: 294mm ( 328mm including under lap section ) Height: 418mm. Vent tile performance: Free airflow 10,000mm² Complies fully with relevant Building Regulations and British standards. Manufactured with UV stable materials to reduce colour fade. Other colours available in our shop.