Can-Filter – Can-Filter 150 w/ out Flange 1260 CFM

The Can-Filter 150 is a large-format activated carbon air filter rated at 1,260 CFM, built for commercial grow rooms and facilities that require high-volume odor and VOC control. It uses Can Filters’ original granular packed-bed design with a 2.5-inch carbon bed — a configuration the company has refined over 30 years of production.

Can-Filter 150 Specifications

Specifications are drawn from the product title, canonical description, and confirmed weight attribute. The 1,260 CFM airflow rating and model designation appear in the product title. Carbon bed depth and contact time are stated in the manufacturer’s description.

Specification	Value
Brand	Can Filters
Model	Can-Filter 150 (without flange)
Airflow Rating	1,260 CFM
Carbon Bed Depth	2.5 inches
Carbon Type	Granular virgin activated carbon
Contact Time	0.1 seconds (rated)
Filter Design	Packed-bed granular carbon
Flange Configuration	Without flange
Weight	117.03 lb
Primary Application	VOC removal, odor control, gaseous contaminant filtration

Why Choose the Can-Filter 150

The Can-Filter 150 is designed for growers and facility managers who need high-volume air filtration without sacrificing filter lifespan or airflow efficiency. Several aspects of the design distinguish it from lower-cost alternatives.

• 2.5-inch carbon bed: The Original Can-Filter uses what the manufacturer describes as the industry’s thickest carbon bed at 2.5 inches. A deeper carbon bed increases the amount of activated carbon an airstream passes through, which extends the filter’s capacity to absorb VOCs and odors before the carbon becomes saturated.
• Low pressure drop: Despite the thick carbon bed, the granular packed-bed design maintains low pressure drops across all filter sizes. This matters in ducted systems where a high-resistance filter forces fans to work harder, reducing effective airflow and shortening fan motor life.
• Granular virgin activated carbon: The filter uses granular — not pelletized or extruded — virgin activated carbon. Granular carbon provides a larger total surface area relative to carbon mass, which supports higher VOC adsorption capacity and longer service intervals between carbon replacements.
• 30-year track record: According to the manufacturer, this packed-bed design and carbon specification have been in continuous production for 30 years. That longevity in a competitive product category reflects consistent real-world performance across diverse grow environments.
• Broad contaminant coverage: The filter targets VOCs including paint fumes and hydrocarbons, general odors, and other gaseous contaminants — making it appropriate for both horticultural and light industrial air quality applications.

Best Uses for the Can-Filter 150

The 1,260 CFM rating places the Can-Filter 150 at the high end of the carbon filter range. It is best suited to large-scale or commercial applications where airflow requirements exceed what smaller filters can handle.

• Large commercial grow rooms: A 1,260 CFM filter is sized for grow rooms that require frequent full air exchanges. Commercial cannabis, vegetable, and herb cultivation facilities that run multiple high-output fans benefit from a single large filter rather than multiple smaller units in series.
• Multi-light indoor grow tents or rooms: Spaces running eight or more grow lights generate substantial heat and canopy odors. The Can-Filter 150 handles the combined exhaust volume from large inline fans without choking airflow or requiring multiple filter stages.
• VOC control in grow facilities: Facilities using solvents, cleaning agents, or pest-management sprays alongside plant odors need a filter rated for general VOC removal. The Can-Filter 150’s carbon specification covers hydrocarbons and paint fumes in addition to plant terpenes and other organic compounds.
• Negative-pressure HVAC exhausts: Buildings or rooms maintained under negative pressure to prevent odor escape benefit from a high-flow filter on the exhaust stack. The Can-Filter 150 can handle the airflow volumes associated with dedicated exhaust HVAC circuits in commercial-scale facilities.
• Grow environments requiring long filter service intervals: The large carbon mass in the Can-Filter 150 means longer time between filter replacements or carbon replenishment. For operators who want to minimize maintenance frequency in a high-volume system, a large-format filter reduces scheduled downtime.

Can-Filter 150 vs Similar Products

When comparing the Can-Filter 150 to other large-format carbon filters in the same airflow range, the key differentiators come down to carbon bed construction and long-term operating costs.

Many carbon filters in the 1,000–1,500 CFM class use pelletized or extruded activated carbon rather than loose granular carbon. Pelletized carbon is easier to pack consistently, but granular carbon typically offers a higher surface-area-to-mass ratio, which can translate to better VOC adsorption per unit of carbon weight. The Can-Filter design packs granular carbon into a cylindrical bed, which the manufacturer states allows low pressure drop across the filter face.

The 2.5-inch bed depth is a specific design claim Can Filters makes for the Original line. Competing large-format filters often use thinner carbon beds — sometimes 1 to 1.5 inches — and compensate with higher airflow ratings. A thinner bed may pass air more easily but saturates faster, meaning more frequent carbon replacement or filter changes. The Can-Filter 150 trades some initial airflow resistance for a longer service life before carbon exhaustion.

Without flange means the filter body does not include an integral duct collar. This configuration is common for installations where the fan or duct adapter is mounted directly to the filter using an external coupling or sleeve. If your installation requires a flanged connection, Can Filters offers flanged versions of the 150 model. If you are also evaluating filtration and pre-filter options for your intake side, the Air Box 4 pre-filter is a compatible upstream solution for protecting carbon filters from particulate loading.

Compatibility

The Can-Filter 150 without flange is designed for use in ducted exhaust systems. The following compatibility notes are based on the product specifications and standard carbon filter installation practices.

• Inline fans: The filter requires a compatible inline centrifugal fan rated for the same duct diameter and capable of delivering the target CFM against the filter’s static pressure. Match the fan and filter to the same duct size to avoid airflow restrictions at the connection point.
• Duct sizing: At 1,260 CFM, this filter is typically connected to large-diameter ducting (commonly 12-inch or 14-inch duct, depending on the specific filter port dimensions — confirm with manufacturer specs for the Can-Filter 150 body dimensions). Using undersized duct increases velocity and back-pressure, reducing effective flow.
• Pre-filters: Can Filters recommends pairing the Original with a pre-filter sleeve to capture particulates before they reach the carbon bed. A pre-filter extends carbon life by preventing dust and debris from occupying adsorption sites. The Air Box 4 pre-filter is one option for intake-side particulate capture in large grow setups.
• Environmental range: Activated carbon filters perform best within standard indoor temperature and relative humidity ranges. Excessive humidity can reduce carbon adsorption efficiency by filling pore sites with water vapor. Maintaining RH below 70% in the grow environment helps preserve carbon filter service life. An active air circulation fan helps distribute temperature and humidity evenly across large spaces, reducing humidity hot spots near the filter intake.
• Without flange: This model does not include an integrated flange or duct collar. Connection to ducting requires a compatible external coupling, duct adapter, or clamp-on sleeve appropriate for the filter’s port diameter.

Usage Guidelines

Carbon air filters require correct sizing, installation orientation, and environmental management to deliver the rated service life. The following guidelines apply to the Can-Filter 150 and activated carbon filters in general.

• Match fan CFM to filter rating: The Can-Filter 150 is rated at 1,260 CFM. Running a significantly oversized fan pushes air through the carbon bed too quickly, reducing contact time and adsorption efficiency. Running an undersized fan reduces air exchange rate. Target a fan rated within 10–20% of the filter’s CFM rating.
• 0.1-second contact time: The manufacturer rates the Original Can-Filter at a minimum 0.1-second contact time. This is the time a given volume of air spends in contact with the carbon bed. Maintaining the rated fan speed preserves this contact time and ensures the filter delivers its rated VOC removal performance.
• Orientation: Carbon filters are typically installed vertically (inline with exhaust duct) or horizontally, depending on the room layout. Either orientation is acceptable provided the filter is supported to prevent stress on duct connections at the filter port.
• Monitor for breakthrough: Carbon filters do not last indefinitely. When odors begin to pass through the filter despite correct fan operation, the carbon bed is approaching saturation. Replace the carbon or the filter body at this point — running a saturated filter provides no meaningful odor control.
• Humidity management: Keep relative humidity in the grow space below 70% when possible. High humidity accelerates carbon saturation by occupying adsorption sites with water vapor, shortening the effective service life of the carbon bed.
• Pre-filter use: Install a pre-filter sleeve around the Can-Filter 150 body to prevent dust, pollen, and plant debris from reaching the carbon. Replace or clean the pre-filter regularly — a loaded pre-filter increases static pressure and reduces net airflow through the system.

How to Install the Can-Filter 150

The following steps describe a typical installation of the Can-Filter 150 (without flange) in a ducted exhaust system. Exact duct dimensions and mounting hardware will vary by facility. Confirm the filter port diameter before purchasing duct, couplings, or fan equipment.

1. Plan the exhaust path: Identify the exhaust route from the grow space to the discharge point (roof penetration, wall vent, or HVAC exhaust plenum). Minimize duct bends — each 90-degree elbow adds static pressure equivalent to several feet of straight duct.
2. Select compatible fan and ducting: Choose an inline fan rated for the appropriate CFM and duct diameter. Confirm the Can-Filter 150 port diameter and match your duct and couplings accordingly. For without-flange models, you will need a clamp-on or slip-fit duct coupling to connect the filter to the duct run.
3. Mount or support the filter body: At 117 lb, the Can-Filter 150 is heavy. Do not support its weight solely from duct connections. Use appropriate filter hangers, support brackets, or a floor-standing mount. Ensure the mounting structure is rated for the weight.
4. Attach pre-filter sleeve: Slip a compatible pre-filter sleeve over the filter body before connecting ductwork. The pre-filter traps particulates and extends carbon life.
5. Connect the fan to the filter: Attach the inline fan to the filter port using the appropriate coupling. The fan should draw air through the filter (pull configuration), not push air into it (push configuration). Pull configurations distribute airflow more evenly across the carbon bed face.
6. Run ducting to the exhaust point: Connect insulated or uninsulated ducting from the fan discharge to the exhaust vent. Use ducting appropriate for the airflow volume — undersized duct increases velocity and system back-pressure.
7. Seal all connections: Use duct tape or clamps at all connection points to prevent unfiltered air from bypassing the carbon bed and entering the exhaust path.
8. Test airflow and check for odor pass-through: Power on the fan at operating speed and verify airflow at the exhaust discharge. Check the grow space for odor levels. If odors are present at the exhaust, check for air leaks at duct joints or confirm the fan is correctly sized for the filter’s CFM rating.

Sources & Further Reading