Kootenay Filter Pre-Filter 500SL | Air Filter Replacement Light Meters + PAR Meters Dual-ball bearings and a 50

Dual-ball bearings and a 50

Read the number the right way and this part is easy

We don't use paclobutrazol

and no spare parts to stock

Kootenay Filter Pre-Filter 500SL | Air Filter Replacement Light Meters + PAR Meters Dual-ball bearings and a 50Extend Filter Life with the Kootenay 500SL Air Filter Replacement Designed for SL500 filters without a flange, the Kootenay Filter Pre Filter 500SL blocks dust, debris, and larger particulates from reaching and clogging your primary filter. This replacement pre filter enhances air filtration efficiency, supports odor control, and reduces system maintenance over time. With a 16'' diameter, 20'' length, and compatibility with 6'', 8'', and 10'' flanges,