MÖLLER is the leading European manufacturer of extruded plastic frames and accessories for the air filter industry. Frames and accessories are available for 3/4" and 1" pocket filters, 2", 3", 4", 6" and 12" panel filters with and without header as well as 3V and 4V compact filters. 4V filter frame for high temperature application up to 248° F available. Safe and time-saving assembly. No glue or additional tools are needed.