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AC Infinity 2x4 Grow Tent

A 2x4 (24 inch by 48 inch) footprint fits 2 plants at standard spacing or 4 plants under screen-of-green training. Recommended PAR is 200 to 240W of full-spectrum LED. Ventilation pairs with a 4-inch inline fan moving 100 to 200 CFM through a matching 4-inch carbon filter. Ceiling clearance for a 6-foot tent plus 12 inches of light hood plus 12 inches of inline fan adds to roughly 8 feet of vertical room space. The core build decision is tent-only Cloudlab 642 vs complete Advance 2-plant kit, which drives both cost and assembly time.

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Buyer's Guide

AC Infinity 2x4 Grow Tent: Complete Guide

What Fits in a 2x4 AC Infinity Build

The 2x4 footprint is the most space-efficient way to run two plants indoors. It's narrow enough to fit against a wall in a closet or basement corner, but wide enough to give each plant a 2x2 personal canopy. The AC Infinity 2x4 lineup comes in three SKU choices: tent-only Cloudlab 642, tent plus ventilation kit, or the complete Advance 2-plant kit with light and controller included.

SKU Choice: Tent-Only vs Complete Kit

Build Type SKU Includes Best For
Tent only Cloudlab 642 Tent + steel frame + observation window Build with existing gear
Tent + ventilation 2x4 Ventilation Kit Tent + Cloudline fan + carbon filter + ducting Bring your own LED
Complete Advance kit Advance 2-Plant Kit Tent + Ionboard LED + Cloudline fan + carbon filter + Smart Controller Closed-loop turnkey

Spec Targets for a 2x4

For a 2-plant 2x4 grow, target 200-240W of full-spectrum LED across the canopy at 12-15 inches hang distance. A 4-inch Cloudline T4 or S4 at 50 percent duty cycle delivers enough airflow for the smaller footprint without making the room sound like a server closet. The matching 4-inch carbon filter handles odor control through the same duct. For autoflowers or screen-of-green training, this footprint stretches to 4 small plants comfortably.

For a closer look at plant-count math across footprints, see the plant-count guide.

Related Guides

For cross-brand 2x4 comparisons, the broader 2x4 grow tents page lines up the Cloudlab 642 against Spider Farmer, Mars Hydro, and Gorilla Grow Tent. The wider AC Infinity grow tent lineup covers every size from 2x2 up to 10x10.

Frequently Asked Questions

How many plants fit in a 2x4?
Two plants at standard spacing (each gets a 2x2 personal canopy) or four small plants under screen-of-green training. Two is the most-recommended count because it lines up with the Advance 2-plant kit and gives each plant room for a full canopy without crowding.
What size light for a 2x4 tent?
A 200-240W full-spectrum LED covers the 2x4 footprint for both veg and flower. The Ionboard S24 at 200W is the kit default. For aggressive flowering, the Ionframe EVO3 at 280W is the upgrade path with better edge uniformity.
Cloudlab 642 vs Advance 2-plant kit, which one?
The Cloudlab 642 is the tent on its own. The Advance 2-Plant Kit ships the same tent plus an Ionboard LED, Cloudline fan, carbon filter, ducting, and Smart Controller. Pick the kit for a turnkey setup; pick the tent-only if you already have an LED and want to swap it in.
What CFM fan for a 2x4?
A 4-inch Cloudline T4 or S4 at 205 CFM in free air is the right size. With a carbon filter inline, real-world airflow drops to about 130-150 CFM, which still gives 6-8x air exchange per minute on the 48 cubic foot tent volume. Running the fan at 40-50 percent duty cycle keeps noise low.
Is the 2x4 tall enough for autoflowers?
Yes, the Cloudlab 642 at 6 feet tall accommodates most autoflowers (typical mature height 2-3 feet) with room for the LED and headspace. For taller photoperiod plants under heavy training, a 6-foot-8-inch tent (like the 844) gives more flex, but the 642 handles autoflowers comfortably.
What's the difference between Cloudlab 642 and 642D?
The 642 is a single-chamber 2x4 tent. The 642D adds a built-in chamber divider that splits the interior into two side-by-side compartments, so one side runs veg and the other runs flower. For a continuous-harvest setup in a 2x4 footprint, the 642D is the pick. For a single climate at a time, the 642 is simpler.
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