Fits Regency model I2400M, H2100, I3100 that uses blower 910-157/P. Blower only – 2 Speed Motor. 92 amps, 115 Volts. 135/80 CFM, 2800 RPM. Skelton Motor, power leads only. No Power Cord, no switch. Overall length = 13.0″ x 4.25″ height. Center to center mounting grommets 14. 2 openings: 1″x 4 7/8″; Distance between flanges = 3.25. These are designed to be replacements for the listed blower model number. The blowers are aftermarket models-not original equipment. Be sure to compare the dimensions listed, to your unit, to be sure it will fit. The blowers are “contractor kits” with no installation instructions. Intended to be installed by a qualified technician. Odels that uses the blower 910-157/P. Same as Rotom HB-RB167. White Wire – Neutral. Black Wire – High Speed. Red Wire – Low Speed.