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This video discusses the need for ventilation of the sewer riser, the norms and rules governing this section of house building and VILPE elements designed for ventilation of the sewer system. Any questions left? Write in the comments, we will be happy to answer. _________ Our contacts: Website https://www.vilperus.com/ Social networks: VK: https://vk.com/vilperus Telegram: https://t.me/vilperus #vilpe #ventilationofsewage #fanstack