The Key Filters product line of manual, hydraulic and continuous screen changers will continue within the Parkinson family of brands that include Parkinson Winders, Marshall & Williams Plastics and Dusenbery Converting Systems.

Woonsocket, Rhode Island-based Key Filters and Parkinson Technologies have been affiliated since 1993, with both companies sharing common ownership. Key Filters and Parkinson Technologies have both operated from the same building for a number of years, and the two companies have shared systems and technical resources.