CleanAir, filter sleeve cages
Consistent quality, speed of production, experience and customer service all work in synergy to guarantee our customers reliability and confidence over time.
CleanAir is the industrial company established by Defim, specialising in the manufacture of filter sleeve supports for industrial dust removal. Constant research and targeted investments to achieve a highly-specialised and agile structure guide the provision of consultancy, services and products for the world of air filtration and separation.
The primary objective in the establishment of CleanAir Europe was the creation of a production process entirely managed within the company for complete control and full responsibility of each production phase and the relative product quality.
In accordance with this objective, CleanAir Europe has production lines entirely made and designed in-house, with fully-automatic machines capable of creating all types of filter sleeve supports.

Our History
In April 1958, the new company of Defim Srl was established by Luigi Montanelli. The name "Defim" comes from the first letters of "Derivati Fili Metallici" – being metal wire derivatives. The company’s core business is the processing of wire for various products in a range of sectors, including bottle-holder cages, screens, conveyor belts, cages for poultry farms, industrial nets and cages for undistinguished filtering sleeves.

Our beliefs
Respect for environmental and air quality issues is a matter that concerns the entire air filtration sector. CleanAir contributes to protecting the environment not only by creating supports used in air filtration systems but also by paying the utmost attention to the in-house production processes.
Quality certifications
To ensure a consistent standard of quality, CleanAir has achieved ISO 9001:2015 certification for the “Manufacture of sleeve-holder cages for industrial filtration in accordance with Customer specifications”.
Certified welding
CleanAir Europe has been awarded ISO 3834 certification, which establishes the quality requirements for welding metal materials, being a guide that sets the standards for the proper management of the manufacturing process
In order to most differentiate its offering, to provide its customers with value-added products and have full control of the finishing stages, CleanAir has created its own in-house division for treating and finishing its products based on electrodeposition technology and nanotechnology-based treatments. The EcoHPC Plus treatment and the electrodeposition coating process is managed internally, being entirely dedicated to treating filter sleeve cages so as to constantly ensure a high product quality.
Contact a
TECHNICAL EXPERT
Call us today to find out how our expertise can provide you with the filtration solution you’re seeking. Our professional relationship will last well beyond the sale, thanks to our unparalleled customer service and technical expertise in the field of filtration.