Suburban 525028 (233352/233100) Furnace Low Air Flow Switch.
This is a replacement Suburban Furnace Low Air Flow Switch for Suburban Furnace NT-12S/ NT-12SE/ NT-16S/ NT-16SE/ NT-20S/ NT-20SE/ NT-16SQ/NT-20SQ/ NT-16SEQ/ NT-20SEQ. (0.1A, 125-250V AC 0.5A, 30V DC). Please Note: All Suburban Serial Numbers manufactured after January 1990, will be nine digits. The first two (2) digits signify the year of manufacture. The next set of digits, indicate the week of the year and the remaining digits are serial numbers.