4" Ventilation Kits and Fans

4" Air Filtration Kit A grow tent air filtration system with all the necessary inline components you need to ventilate your grow space. By assembli...

CLOUDLINE T4, QUIET INLINE DUCT FAN SYSTEM WITH TEMPERATURE AND HUMIDITY CONTROLLER, 4-INCH A smart inline duct fan designed to quietly ventilate h...

Spider Farmer® 4-Inch 205 CFM Inline Fan with Speed Controller, Carbon Filter & Ducting Combo POWERFUL INLINE FAN - Made of the heavy-duty pl...

AC Infinity Air Filtration Kit  - 4" A grow tent air filtration system with all the necessary inline components you need to ventilate your grow spa...

Spider Farmer® 4-Inch 205CFM Inline Fan with Smart Controller, Carbon Filter & Ducting Combo PROGRAMMABLE INLINE FAN: Mixed flow design combi...

Featuring a 4 inch inline duct fan rated for 205CFM and a carbon filter with Virgin Australian activated charcoal, controlled by a digital touch-sc...

AC Infinity S4 Grow Room Ventilation Package - 4" The AC Infinity Cloudline S4, Quiet Inline Duct Fan System With Speed Controller, 4-inch duct fan...

With a 4'' inline fan rated for 205CFM, an activated carbon filter with Australian charcoal, and a knob controller applied to allow easy switching ...

CLOUDLINE A4, QUIET INLINE FAN WITH SPEED CONTROLLER, 4-INCH This inline fan system packs the CLOUDLINE’s core innovations and premium build qualit...

NOISE REDUCTION CLAMP, DUCT COUPLER WITH STAINLESS STEEL CLAMPS, 4-INCH A rubber clamp designed to connect duct ports with a secure and airtight...

AIR FILTER BOX WITH HIGH EFFICACY FILTER, 4-INCH A whole-house air filtration system designed for use with inline duct fans such as the CLOUDLINE S...

MARS HYDRO IFRESH 4-INCH SMART INLINE DUCT FAN AND CARBON FILTER COMBO VENTILATION FOR GROW TENT The Mars Hydro 4'' Smart Ventilation Kit includes ...

FLEXIBLE FOUR-LAYER DUCTING, 25-FT LONG, 4-INCH This ducting is designed for various ventilation, circulation, and heating/cooling transfer applica...

STAINLESS STEEL DUCT CLAMPS, 4-INCH, TWO PACK This duct clamp is designed to secure various ducting components together. It features a heavy-dut...

FLEXIBLE FOUR-LAYER DUCTING, 8-FT LONG, 4-INCH This ducting is designed for various ventilation, circulation, and heating/cooling transfer applicat...