Seals openings in chimney pipes, stove pipes and vents; also suitable for drain pipes, to prevent odors and protection against rats, and prevents drafts in the home. The chimney guard is made of high-quality stainless steel, strong, durable and corrosion-resistant. Thanks to the stainless steel, the chimney guard can withstand all weather conditions such as rain, snow and sun! Top diameter of the stove pipe guard: 216 mm/8.5 inches, bottom diameter: 175 mm/6.88 inches, height: 54 mm/2.12 inches; suitable for 180 mm pipes. Flat lid design: inserted flush with the pipe, the fastening crown is spot welded to the lid, which is compressed; it can be inserted into a hole and then released, which pulls it tightly against the inner walls of the hole, forming a tight seal inside the pipe. The chimney ventilation cover fits chimney pipes, stove pipes, chimneys, inlet and outlet pipes, as well as all openings up to Ø 180 mm. Suitable for ventilation, vacuum, heating, air conditioning or production process systems.