With the Festool ll-fis closure, you maintain a secure and dustproof seal on reusable Longlife filter bags for your Festool dust extractor. Made from durable, shape-retaining plastic, this profile clamps the bag opening firmly shut to prevent fine dust and debris from leaking into the extractor housing. When it is time to empty the collected waste, you simply slide the closure clip off for quick and clean disposal. Designed as a genuine replacement part for models such as the Longlife-FIS-CT 26 and Longlife-FIS-CT 36, it restores proper bag sealing for reliable operation in the workshop and on the jobsite.