Top 8 Best 4 Inch Air Filter

Designed to eliminate odors and chemicals for grow tents and hydroponics room.. Features premium-grade Australian charcoal with higher absorption and longer life rating.. Contains heavy-duty aluminum flanges, galvanized steel meshing, and clothed pre-filter.. Enables maximum airflow passthrough for both intake and exhaust configurations.. Duct Opening 4 Length 13 Airflow Rating 210 CFM Carbon Australian RC412 at 1200 IAV Thickness 38mm.

ENGINEERED POWER State-of-the-art filtration media provides up to 50 more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicles acceleration by up to 10.. EASY INSTALLATION Pre-oiled and built with simple clamp-on design. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains.. SAVES MONEY KN high-flow replacement air filters will save you 250 over 10 years by avoiding disposable filters.. ECO-FRIENDLY Using a washable, reusable product helps reduce replacement waste. A KN filter will last longer than 10 disposable filters.. WORLD CLASS PROTECTION Pushing the limits of engine protection by protecting your engine from harmful contaminants.. LOW-MAINTENANCE DESIGN 50,000 miles before your first cleaning under normal highway driving conditions.. HIGH QUALITY Made in America.. RACE TESTED The Official Air Filter of NASCAR. Trusted on the racetrackmade for your vehicle.. NO-HASSLE WARRANTY 1-Year Limited Warranty.

ENGINEERED POWER State-of-the-art filtration media provides up to 50 more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicles acceleration by up to 10.. EASY INSTALLATION Pre-oiled and built with simple clamp-on design. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains.. SAVES MONEY KN high-flow replacement air filters will save you 250 over 10 years by avoiding disposable filters.. ECO-FRIENDLY Using a washable, reusable product helps reduce replacement waste. A KN filter will last longer than 10 disposable filters.. WORLD CLASS PROTECTION Pushing the limits of engine protection by protecting your engine from harmful contaminants.. LOW-MAINTENANCE DESIGN 50,000 miles before your first cleaning under normal highway driving conditions.. HIGH QUALITY Made in America.. RACE TESTED The Official Air Filter of NASCAR. Trusted on the racetrackmade for your vehicle.. NO-HASSLE WARRANTY 1-Year Limited Warranty.

ENGINEERED POWER State-of-the-art filtration media provides up to 50 more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicles acceleration by up to 10.. EASY INSTALLATION Pre-oiled and built with simple clamp-on design. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains.. SAVES MONEY KN high-flow replacement air filters will save you 250 over 10 years by avoiding disposable filters.. ECO-FRIENDLY Using a washable, reusable product helps reduce replacement waste. A KN filter will last longer than 10 disposable filters.. WORLD CLASS PROTECTION Pushing the limits of engine protection by protecting your engine from harmful contaminants.. LOW-MAINTENANCE DESIGN 50,000 miles before your first cleaning under normal highway driving conditions.. HIGH QUALITY Made in America.. RACE TESTED The Official Air Filter of NASCAR. Trusted on the racetrackmade for your vehicle.. NO-HASSLE WARRANTY 1-Year Limited Warranty.

ENGINEERED POWER State-of-the-art filtration media provides up to 50 more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicles acceleration by up to 10.. EASY INSTALLATION Pre-oiled and built with simple clamp-on design. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains.. SAVES MONEY KN high-flow replacement air filters will save you 250 over 10 years by avoiding disposable filters.. ECO-FRIENDLY Using a washable, reusable product helps reduce replacement waste. A KN filter will last longer than 10 disposable filters.. WORLD CLASS PROTECTION Pushing the limits of engine protection by protecting your engine from harmful contaminants.. LOW-MAINTENANCE DESIGN 50,000 miles before your first cleaning under normal highway driving conditions.. HIGH QUALITY Made in America.. RACE TESTED The Official Air Filter of NASCAR. Trusted on the racetrackmade for your vehicle.. NO-HASSLE WARRANTY 1-Year Limited Warranty.

Universal replacement air intakes filter. High air flow to increase horsepower and throttle response. This filter is made with two layers of mesh material. Filter is both reusable and washable and comes with stainless steel clamp. Easy to assemble with all parts included. No additional parts needed.

ENGINEERED POWER State-of-the-art filtration media provides up to 50 more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicles acceleration by up to 10.. EASY INSTALLATION Pre-oiled and built with simple clamp-on design. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains.. SAVES MONEY KN high-flow replacement air filters will save you 250 over 10 years by avoiding disposable filters.. ECO-FRIENDLY Using a washable, reusable product helps reduce replacement waste. A KN filter will last longer than 10 disposable filters.. WORLD CLASS PROTECTION Pushing the limits of engine protection by protecting your engine from harmful contaminants.. LOW-MAINTENANCE DESIGN 50,000 miles before your first cleaning under normal highway driving conditions.. HIGH QUALITY Made in America.. RACE TESTED The Official Air Filter of NASCAR. Trusted on the racetrackmade for your vehicle.. NO-HASSLE WARRANTY 1-Year Limited Warranty.

Sinister Diesel 4in ID 10in Tall Replacement Air Filter.

Superior Carbon Quality Made of imported Virgin Australian activated charcoal, delivering 100 filtered airflow. 1050 RC 48 carbon captures three times more air contaminants than average due to optimal surface area per carbon particle. Eliminates Smelliness Protects from smelliness from pungent indoor grow operations to bathrooms, basements and kitchens. Absorbs smelliness from pets and smoking as well. Effective Smelliness Control Eliminate some of the most undesirable, pungent smell and particulates from indoor grow tent, hydroponics grow room. Versatile Applications Item can be used as intake or exhaust filter in a variety of setups including use with 4 inch inline fan and duct fans, intake and exhaust fans, air exchange fans, ventilation ducts, and other accessories. Package Includes Carbon Filter Changeable Pre-filter Carbon Filter Belts. Dimensions 4'' x 14''..

Universal replacement air intakes filter. High air flow to increase horsepower and throttle response. This filter is made with two layers of mesh material. Filter is both reusable and washable and comes with stainless steel clamp. Easy to assemble with all parts included. No additional parts needed.