The Can Original is the “workhorse” of the Can Filter series. It has a thick 6.5cm carbon layer filled with high quality heavy duty carbon and a lifespan of 30 months. Combined with the right fan, this is a worry-free solution. There are 11 versions from 75 m³/h up to 2100 m³/h. This is the original filter we started with and it has proven its quality in over 30 years of Can's existence worldwide. Free Shipping. Quality for the indoor cannabis grower.