4" Ventilation Kits and Fans

Air Filtration Kit PRO 4", AI-Powered Controller with WiFi App, Inline Fan with Carbon Filter & Ducting Combo A grow tent air filtration syste...

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...

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...

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...

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

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

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