Lennox X8344 PCO-20C Upgrade Kit With-out Insert.
(6) H/C Pure Aire UV-A Lamps (X8149)
(1) H/C Pure Air MERV 16 Filter (X6669)
PLEASE NOTE: Do not touch bulbs with bare hands, use gloves to install the bulbs. Oils from your hands can affect the performance of the bulbs.