Preventative Maintenance Kit for Model 7545-2 (230V-60Hz Photostability Chamber) Includes (1) FIL-114 Filter Media, 25 PPI, with Reinforced Backing, (1) HUM-125 Anti-Microbial Puck, (4) VEL-104 1/2" Velcro Discs and (6) LGT-138 UVA Lamps. Detailed Instructions Included.