AC Infinity Air Filtration Kit 4” | Inline Fan with Speed Controller | Carbon Filter & Ducting Combo

Precision Control in Any Space

The enemy is guesswork — and in a sealed cultivation environment, guesswork has a direct operating cost. When airflow is uncontrolled, odor migrates, humidity stratifies, and the atmospheric conditions that determine output quality become unpredictable from one cycle to the next. Fixed-speed fans either over-pressurize the space and waste energy, or under-deliver and allow odor breakthrough. Carbon filters with low-grade media saturate early and require replacement on no predictable schedule. Ducting that leaks at the seams or collapses under negative pressure turns every air exchange event into a variable — and variables compound. The result is an environment that requires constant manual intervention to hold within acceptable parameters, and still drifts.

After deployment, the environment stabilizes. Airflow runs at the exact speed the space requires — not the speed the hardware defaults to. Odor is captured at the source and scrubbed through a deep-bed activated carbon matrix before it can migrate. The carbon bed lasts longer because the prefilter intercepts particulate before it reaches the carbon layer, and the reversible flange design allows the bed to be rotated, distributing adsorption load evenly across the full media volume. The ducting holds its shape under negative pressure, maintains its seal at every connection point, and resists the thermal stress of continuous warm-air exhaust. The operator sets the parameters once and the system holds them.

The mechanism behind that stability is a matched assembly engineered to operate as a single atmospheric control unit. The EC-motor inline fan delivers 165 CFM at a maximum of 2,800 RPM, drawing 35W at peak and averaging 18W under normal operating conditions — 0.55A on any supply between 100 and 240V AC at 50/60Hz. The dual ball bearing motor carries a rated L10 life expectancy of 67,000 hours and is sealed to IP 44 against liquid ingress and dust. The S-Series speed controller uses PWM control to step fan speed across 10 discrete settings, enabling operation at extremely low RPMs without motor noise — a single-button interface with a circular readout display. The carbon filter is packed with RC412 Australian activated charcoal rated at 1200+ IAV, with 38mm carbon thickness and a maximum airflow rating of 210 CFM, housed in aluminum flanges with galvanized steel mesh for 100% air passthrough. The included 25-foot, four-layer ducting assembly — dual PVC thermoplastic outer, flame-resistant aluminum inner, steel wire internal support — connects the system without pressure loss. In practical terms, the AC Infinity Air Filtration Kit 4" delivers 165 CFM of filtered, odor-scrubbed airflow through a 4" duct circuit at an average draw of 18W and a peak draw of 35W.

Where This Belongs (and Doesn't)

This kit is a ventilation and odor control assembly. It is not a substitute for structural HVAC, electrical load management, or fire suppression systems. All electrical connections must comply with applicable local codes. Consult a licensed electrician before integrating into any fixed wiring circuit.

How It Works

The AC-FKS4 operates as an integrated atmospheric control circuit. The EC-motor inline fan — an electronically commutated motor design — draws air through the 4" duct at up to 165 CFM and 2,800 RPM, generating up to 324 Pa of static pressure to overcome duct resistance across the included 25-foot run. EC-motor architecture eliminates the efficiency losses and heat generation associated with conventional AC induction motors, which is why average power consumption sits at 18W against a 35W maximum — the motor modulates its own draw in response to the PWM signal from the speed controller rather than running at fixed load. Noise output is rated at 29 dBA across the operating range. The fan unit measures 7.48 x 11.89 x 6.93 in. (19.0 x 30.2 x 17.6 cm) with a mounting hole-to-hole distance of 3.15 x 2.36 in. (8.0 x 6.0 cm) and 0.197 in. (0.5 cm) screw hole diameter. Dual ball bearings support the motor shaft, rated to an L10 life expectancy of 67,000 hours, and the dual ball bearing design permits horizontal or vertical mounting orientation without bearing load compromise. The IP 44 rating confirms sealed resistance to dust ingress and splashing liquids from any direction.

The S-Series speed controller connects via a 72-inch cord from the fan unit and a separate 72-inch cord to the wall plug (US NEMA 1-15 Type-A). The controller itself measures 2.70 x 1.37 x 0.55 in. (6.9 x 3.5 x 1.4 cm) and uses a single-button interface with a circular readout display to step through 10 discrete speed settings via PWM control. PWM modulation allows the fan to operate at extremely low RPMs without the motor noise that characterizes voltage-reduction speed control methods. The controller is compatible with the B-Series Temperature Controller, CONTROLLER UNC529, and CONTROLLER 69, and supports UIS connector integration for multi-device management from a single central controller. Bluetooth pairing with the AC Infinity app enables remote monitoring and adjustment.

Air exits the fan and passes through the 4-inch, 25-foot ducting assembly before entering or after exiting the carbon filter, depending on configuration. The ducting is constructed in four layers: dual PVC thermoplastic outer layers resist cuts, tears, and air leakage; a flame-resistant aluminum foil inner layer handles thermal stress from continuous warm exhaust; and internal steel wire coils maintain the duct's circular cross-section under negative pressure, preventing collapse that would reduce effective CFM. The carbon filter presents a 4" duct opening, measures 13.35 x 6.97 in. (33.3 x 17.7 cm) overall, with a 1.46 in. (3.7 cm) aluminum flange and a reversible flange design that allows the carbon bed to be flipped, distributing adsorption load across both faces of the media and extending service life. The carbon bed is 38mm thick, packed with RC412 Australian activated charcoal rated at 1200+ IAV, and the galvanized steel mesh housing allows 100% air passthrough without flow restriction. Maximum rated airflow through the filter is 210 CFM — above the fan's 165 CFM output, ensuring the filter is never the system's bottleneck. Two prefilter cloths are included to intercept particulate before it reaches the carbon layer, further extending carbon bed service intervals. In practical terms, the AC Infinity Air Filtration Kit 4" moves 165 CFM through a sealed four-layer 25-foot duct circuit and a 38mm RC412 carbon bed at 18W average draw, with a 67,000-hour rated motor and IP 44 environmental sealing.

Commercial Assurance

The AC Infinity Air Filtration Kit 4" (AC-FKS4) carries CE and RoHS certifications. The EC-motor inline fan is rated to an L10 life expectancy of 67,000 hours under standard operating conditions. The IP 44 ingress protection rating confirms resistance to dust and splashing liquids, supporting deployment in humid cultivation environments operating between 35 and 85% RH and 0 to 140°F ambient temperature.

Cannafull Spectrum Solutions is a factory-authorized dealer for AC Infinity products. All units sold through this listing are new, factory-sealed, and covered under the manufacturer's warranty. Warranty terms are determined by AC Infinity and apply from the date of purchase. Review current warranty terms at the manufacturer's official resource before ordering.

Certifications: CE, RoHS  |  IP Rating: IP 44  |  Bearing Life (L10): 67,000 hours  |  Operating Range: 35–85% RH / 0–140°F  |  Input: 100–240V AC, 50/60Hz

System Integration

• UIS Ecosystem Compatibility: The AC-FKS4 connects via Universal Infinity System (UIS) connectors, enabling integration into a centralized atmospheric control network alongside other UIS-compatible devices managed from a single controller node.
• Multi-Device Controller Architecture: Multiple fans, filters, and environmental devices can be linked to a single central controller, reducing manual intervention points and consolidating atmospheric management into one interface.
• Bluetooth Remote Access: Bluetooth pairing with the AC Infinity app allows remote speed adjustment, scheduling, and monitoring without physical access to the controller — relevant for sealed or access-restricted environments.
• Controller Upgrade Path: The S-Series speed controller included in this kit is compatible with the B-Series Temperature Controller, CONTROLLER UNC529, and CONTROLLER 69, allowing operators to upgrade to automated temperature-triggered or environment-responsive control without replacing the fan unit.
• Scalable Deployment: The 100–240V AC, 50/60Hz input and NEMA 1-15 Type-A plug configuration support deployment across standard U.S. facility electrical infrastructure without voltage conversion or adapter requirements.

Facility Integration Data

The following table models cumulative electrical load and average power consumption across multi-unit deployments of the AC-FKS4, based on rated specifications of 35W max / 18W average per unit at 0.55A draw.

Annual kWh calculated at average draw (18W) x 8,760 hours x unit count. Max draw figures reflect simultaneous full-speed operation. Actual consumption will vary based on speed controller settings and duty cycle. Consult a licensed electrician for circuit load planning before multi-unit deployment.

Operator Field Notes

• Carbon Bed Rotation: The reversible aluminum flange design allows the carbon filter to be flipped, distributing adsorption load across both faces of the RC412 media bed. Rotating the filter at scheduled intervals — rather than waiting for odor breakthrough — extends service life measurably beyond the baseline 33% advantage over standard inline filters.
• Prefilter Maintenance Interval: Two prefilter cloths are included. Replace or clean prefilters on a regular schedule to prevent particulate loading from reducing airflow through the carbon bed. A clogged prefilter will reduce effective CFM before the carbon media is exhausted, creating a false indicator of filter saturation.
• Mounting Orientation: Dual ball bearings support horizontal or vertical mounting without bearing load asymmetry. Select mounting orientation based on duct routing geometry, not bearing constraints.
• Low-Speed Operation: PWM control allows the fan to operate at extremely low RPMs without motor noise. For environments requiring near-silent operation — drying rooms, propagation chambers — dial to the lowest speed setting that maintains adequate air exchange, rather than cycling the fan on and off, which introduces pressure fluctuations.
• Controller Upgrade Without Fan Replacement: The EC-motor is compatible with Controller 69, CONTROLLER UNC529, and the B-Series Temperature Controller. Upgrading to automated environment-responsive control does not require replacing the fan unit — only the controller changes.
• Duct Integrity Check: The four-layer ducting assembly maintains its shape under negative pressure via internal steel wire coils. Inspect connection points at the fan and filter flanges after initial installation and after any repositioning to confirm airtight seating. Pressure loss at flange connections is the most common source of reduced system CFM in field deployments.

Operator FAQ

Shipping & Logistics

• Shipping Territory: Cannafull Spectrum Solutions ships within the contiguous 48 United States only. Orders to Alaska, Hawaii, U.S. territories, APO/FPO addresses, and international destinations cannot be processed through this listing.
• Fulfillment: Orders are processed and shipped from authorized U.S. distribution points. Estimated transit times are provided at checkout and are subject to carrier conditions. Cannafull Spectrum Solutions is not responsible for carrier delays after confirmed dispatch.
• Returns: New, unopened units in original factory packaging may be eligible for return within the applicable return window. Units showing signs of installation, use, or damage are not eligible for return as new product. All return requests must be initiated through cannafullspec.com/pages/return-policy before shipping any unit back.
• Restocking Fee: Returns of non-defective items are subject to a restocking fee of up to 25% per our Return Policy. Review full terms at cannafullspec.com/pages/return-policy before ordering.

For order support, warranty claims, or bulk deployment inquiries, contact Cannafull Spectrum Solutions directly through the store contact page at cannafullspec.com.

What's in the Box

The following items are confirmed present in the AC-FKS4 kit based on available source data. Package contents are as configured by AC Infinity for the S-Series variant.

• 4" EC-motor inline fan unit (S-Series, 165 CFM, dual ball bearing, IP 44)
• S-Series 10-speed PWM fan controller with circular readout display (72-inch cord to fan, 72-inch cord to plug)
• 4" activated carbon filter — RC412 Australian charcoal, 1200+ IAV, reversible aluminum flanges, galvanized steel mesh, 13.35 x 6.97 in. overall
• 4-inch ducting, 25 feet (300 inches) — four-layer construction, dual PVC thermoplastic outer, flame-resistant aluminum foil inner, steel wire internal support
• Prefilter cloths — qty 2, for particulate interception at carbon filter inlet

Note: Package contents list is based on available source data. Source documentation for this SKU was noted as truncated in the data normalization process. If complete package contents are a purchasing decision factor, confirm the full contents list with AC Infinity directly before ordering. Cannafull Spectrum Solutions will not accept returns based on contents discrepancies that are consistent with the manufacturer's current kit configuration.

Regional Compliance & Deployment Notes

• Electrical Certifications: The AC-FKS4 carries CE and RoHS certifications. CE marking indicates conformity with applicable European safety and electromagnetic compatibility directives. RoHS certification confirms restriction of hazardous substances in electrical and electronic equipment. Both certifications are relevant to procurement compliance documentation for licensed U.S. facilities with international supply chain reporting requirements.
• U.S. Electrical Compatibility: The fan unit accepts 100–240V AC at 50/60Hz with a US NEMA 1-15 Type-A plug. This configuration is compatible with standard U.S. 120V facility circuits without adapters or voltage conversion. For 240V circuits, confirm outlet configuration with a licensed electrician before connection.
• Ingress Protection: IP 44 rating is verified per IEC 60529 standard. Deployment in environments exceeding the rated operating conditions (35–85% RH, 0–140°F, splash exposure beyond IP 44 parameters) may void manufacturer warranty and is not supported by Cannafull Spectrum Solutions.
• State Licensing Compliance: Cannafull Spectrum Solutions sells equipment only. Operators are solely responsible for ensuring that equipment deployment, facility configuration, and operational practices comply with all applicable state cannabis licensing regulations, local building codes, and fire safety requirements in their jurisdiction. Equipment purchase does not constitute compliance authorization of any kind.
• Shipping Jurisdiction: This product is available for shipment within the contiguous 48 United States only. Cannafull Spectrum Solutions does not ship to Canadian provinces or international destinations.

Compliance requirements vary by state and local jurisdiction. The information provided here is for general reference only and does not constitute legal, electrical, or regulatory advice. Consult qualified legal counsel, a licensed electrician, and your state licensing authority for jurisdiction-specific compliance guidance before deploying this equipment in a licensed facility.