4" Ventilation Kits and Fans

4" Air Filtration Kit An air filtration kit with everything you need to cool, ventilate, and control odors in your grow space. Features the CLOUDL...

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...

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

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

CLOUDLINE PRO S4, QUIET INLINE DUCT FAN SYSTEM WITH SPEED CONTROLLER, 4-INCH The duct fan system is designed to quietly cool AV equipment rooms and...

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

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

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

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

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 ...

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...

2025 Spider Farmer®4-Inch Inline Fan for Indoor Grow 205CFM with GGS Controller, Carbon Filter & Ducting Combo The 2025 version features an upg...

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

CLOUDLINE H4, Inline Fan with Speed Controller for Fungiculture, IP-65 Rated, 4-Inch An inline duct fan specially designed for mushroom cultivation...

Spider Farmer® 4-Inch 205 CFM Inline Fan with Speed Controller RJ12 Port Grow Tent Ventilation The 2025 version features a redesigned RJ12 cable, e...

VIVOSUN 4-Inch 190 CFM Inline Duct Fan Kit with Carbon Filter and Ducting Effective Ventilation: Powerful blower with a fan speed of 2300 RPM for ...

VIVOSUN 4-Inch 190 CFM Inline Duct Fan with Variable Speed Controller Effective Ventilation: Powerful blower with a fan speed of 2300 RPM for an ai...