Plastic connector for secure and tool-free connection of two DN 63 round ducts. Suitable for installation within the concrete ceiling. +-2,000 Pa system airtightness Airtightness class D according to DIN EN 12237 or ATC2 according to EN 16798-3 Fire behavior class E according to EN 13501-1 Operating temperature -20 - +60 °C Compressive strength up to 200 mm concrete Antistatic and antimicrobial Food-safe material All properties independently tested and certified by TÜV Süd or ISEGA Note: Click and sealing ring required! Manufacturer: Wolf GmbH Article number: 2577415
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