H/C UVC-41W-S&41W-D REPL LAMP 41W

Lennox Healthy Climate replacement lamp for the UVC 41W-S and UVC 41W-D . Lennox recommends this bulb be changed annually for best results. 41 Watt Bulb - 16" Long - Ozone Free!4-Pin Bulb with Green Tip

UVC-41W-S takes 1 bulb
UVC-41W-D takes 2 bulbs