Meeting UL flame safety standards, air filter media can be applied to designs requiring multisided, special-shaped frames. Assembly includes flattened, open Uni-grid support or integrated, open-perf pattern to maximize airflow or match industrial design preferences. Screens can also be added for additional flame arrestance or EMI shielding. Filters are UL 94 HF-1, ATCA, UL 900 Class 2, CE, Telcordia, NEBS GR-78-CORE and GR-63-CORE, micro TCA, and ETSI compliant.