Electrical enclosure filter fans and outlet louvers granted UL Type 12 rating.
RITTAL CORP., Springfield, OH, obtained a UL Type 12 rating for most of its electrical enclosure filter fans and outlet louvers. The UL Type 12 rating will help panel builders and other manufacturers achieve a NEMA 12-rated panel when using filter fans.
Rittal Corp. Obtains UL Type 12 Rating
July 14, 2000