The new configuration for the BC Activated Charcoal Filter provides a push and twist-lock connection rather than having to use a clamp to hold it in place. 

Other than the connection update, the BC Activated Coconut Charcoal filter is the same as the previous model and still fits a 4-inch duct.

Easy to install. For the BC dryer, Bloombox or Producer grow chambers, just mount on the main air exchange outlet on the back of the machine.

This filter is specifically designed for the newest style of B.C. Northern Lights Bloomboxes, and Producers. Although the overall dimensions are the same, this filter does not have the same "flange-type" mounting as the older styled filters do, and therefore will not mount directly onto the older units. With a small amount of ingenuity, any 'half-way handyman should be able to adapt this filter to the older style Bloomboxes and Producer units without too much problem. Again- slight modification will be necessary to use this filter for the older Bloomboxes and Producers. Please call us for tips on how to adapt this filter to an older unit.

Depending on the use, these filters will clear the air of growroom odors for approximately 1 to 2 years. Filter not exactly as pictured above.