125 Degree Convection Snap Disc for Quadrafire Pellet, Wood, and Gas Stoves. This is a 1/2" fan switch and is snap disc #1. Works with the following Quadrafire models:

Pellet: 800, 1100i, 1200i

Wood: 3100 ACC (Millennium), 4300 ACC (Millennium), 21M-ACC, 27i ACC, 3100 ACC (Step Top), 31I-ACC, 43ST-ACC, 57ST-ACC

Gas: DV-425 T/R, DV-44

Compatible with Quadrafire Part #s SRV230-0470 and 812-1560