* Specs: size: 12inch; flange ducting: 48inch length.
* Effective odor control: protects from chemical irritants and eliminates odors from bathrooms, basements and kitchens. 12 inch by 48 inch Air Carbon Filter Odor Control Inline Fan * Pre-filter included: we recommend replace the pre-filter every 6 months to protect your filter. * Versatile applications: item can be used as intake or exhaust filter in a variety of setups including use with inline fan and duct fans, intake and exhaust fans, air exchange fans, ventilation ducts, and other accessories. Absorbs odors from pets and smoking, pungent smell and particulates from indoor grow tent.