These custom powder coated filter mounts work inline with our custom BCNL 4" Filters.

Hardware is provided, as these mount to the round collars on the exhaust fans on our dryer or grow boxes. The filter slides easily over the mount with the bolt coming through the mount hole on the filter. Then the wing nut tightens the filter and secures it to the dryer or grow box.

2 versions available:

• 2 1/2" bolts for current models
• 4" bolts for units prior to 2018