The SAAF Cassette Cleanroom Grade is constructed from High Impact Polystyrene (HIPS) and comes pre-filled with SAAF Chemical Media. High technology design tools were employed to validate the design and confirm better performance. Computational Fluid Dynamics (CFD) modeling and performance tests confirm optimal design. The resulting design and construction surpasses any competitor’s cassettes in the market, while allowing users a truly better design with value-enhancing features. The design retrofits easily and performs better than older legacy cassettes in existing installations.