Field Controls 46234800 Motor Repair Kit Patented SWG or Combo Vent Power Venters are ETL and cETL listed for all LP gas, natural gas, or oil-fired heating equipment 100% negative pressure in the vent pipe for maximum safety. Standard galvanized pipe can be used instead of expensive stainless steel No need to seal vent pipe joints, saving time and money. Significantly longer vent lengths than positive pressure, direct vent systems Weight:5.35