Airx 4 Feet Air Curtain — AIRX FM-3512S-L/Y-MC 48-Inch Centrifugal Air Curtain

Open doors let conditioned air escape and pull outside air, dust, and insects inside. In busy commercial entrances, that constant exchange raises energy costs and makes indoor temperatures harder to hold. The Airx 4 Feet Air Curtain solves this problem by pushing a steady sheet of air across the doorway, forming an invisible barrier that separates inside from outside without blocking foot traffic.

The AIRX FM-3512S-L/Y-MC is a 48-inch (1200 mm) centrifugal air curtain built for commercial and entrance use. It delivers continuous airflow across the door opening, which reduces the movement of air between indoor and outdoor spaces. This model suits standard commercial doorways and keeps conditioned environments stable even when the entrance stays open.

Why the Airx 4 Feet Air Curtain Works for Commercial Entrances

Every time a door opens, heated or cooled air leaves the building. The wider the door and the more often it opens, the greater the loss. This means HVAC systems run longer and energy bills climb.

The Airx 4 Feet Air Curtain interrupts that cycle. Its centrifugal fan produces a strong, consistent airstream that spans the full 1200 mm width of the opening. The moving air forms a barrier that resists the natural exchange between two temperature zones. This enables the building to hold its indoor climate with less strain on the cooling or heating system.

The unit mounts above the door, so it uses no floor or wall space at eye level. Staff and customers walk through without obstruction, and the barrier reforms the moment they pass. For entrances that open dozens of times an hour, this constant recovery is the practical difference between stable comfort and constant loss.

48 Inch Centrifugal Design for Strong, Even Airflow

The fan type determines how well an air curtain performs. This model uses a 48 Inch Centrifugal fan, which draws air in and forces it outward at a right angle before directing it down across the doorway. Centrifugal fans generate higher pressure than simple axial fans, so the airstream reaches the floor with force intact.

That pressure matters at wider openings. A 48 Inch Centrifugal unit covers roughly 1.2 meters of door width with a uniform curtain, leaving no weak gaps where outside air can slip through. The result is even coverage from one edge of the frame to the other.

Consistent airflow also limits the entry of dust, insects, and airborne particles when the door stays open. The 48 Inch Centrifugal system keeps that barrier active during peak traffic, which helps maintain cleaner indoor air throughout the day.

Airx Air Curtain Build and Power Specifications

The FM-3512S-L/Y-MC runs on a 220V single-phase supply at 60Hz frequency. Single-phase power means the unit connects to standard commercial wiring without a three-phase circuit, which simplifies installation in most retail and office buildings.

The Airx Air Curtain installs above the door or on the wall directly over the frame. Mounting height and door width should match the 1200 mm coverage the unit is designed to deliver. When sized correctly, the Airx Air Curtain produces a continuous downward stream that holds the barrier across the entire opening.

This Airx Air Curtain model targets medium-width entrances. Its 48-inch span fits standard double doors, single wide doors, and service entrances where a full-width barrier is required.

Technical Specifications

The table above lists the confirmed specifications for this model. Match these values to your electrical supply and door dimensions before installation to get the coverage the unit is designed to deliver.

Airx 4 Feet Air Curtain Applications

This unit fits any commercial space where doors open frequently and indoor conditions need to stay stable. The Airx 4 Feet Air Curtain works across a range of settings:

• Retail shops that keep front doors open to invite foot traffic
• Restaurants that must hold comfort while staff and diners move in and out
• Offices with high-use entrances during business hours
• Hotels with lobby doors that open around the clock
• Supermarkets that need to limit dust and insect entry at checkout exits
• Showrooms that display goods in a controlled climate
• Warehouses with loading and service doors that stay open during shifts
• Service entrances and other frequently used doorways

Each of these settings shares one issue: a door that opens too often to hold its climate on its own. The Airx 4 Feet Air Curtain addresses that directly by keeping the barrier active regardless of traffic volume.

Benefits of the Air Curtain Door Barrier

An air curtain door barrier does more than block drafts. It changes how a building holds energy and how clean the indoor air stays. The FM-3512S-L/Y-MC delivers these practical results:

• Forms an effective air barrier across the full width of the entrance
• Reduces indoor and outdoor air exchange, which lowers HVAC load
• Holds indoor comfort even while the door stays open
• Limits the entry of dust, insects, and airborne particles
• Suits high-traffic commercial entrances that open constantly
• Covers the full 1200 mm doorway with even airflow

An air curtain door setup also supports cleaner indoor conditions. By keeping outside particles from drifting in, the barrier acts as a first line of defense and functions like the best air cleaner for entrance zones. Where the door stays open for deliveries or steady foot traffic, that protection matters most.

Cleaner air at the threshold reduces the burden on interior filtration. Paired with proper ventilation, the best air cleaner strategy starts at the door, and this air curtain door barrier is where that strategy begins.

How to Choose the Best Air Cleaner Approach for Your Entrance

The best air cleaner for a commercial space is rarely a single device. It is a layered approach that starts at the point where contaminants enter. The doorway is that point.

Stopping dust and insects at the entrance means interior air handlers work with a lighter load. This is why an air curtain door barrier belongs at the front of any indoor air plan. The FM-3512S-L/Y-MC forms that first layer, holding particles out before they reach the space.

Match the unit to the door width, confirm the 220V single-phase supply, and mount it at the correct height. Done right, the air curtain door barrier delivers consistent coverage and steady protection throughout the day.

Frequently Asked Questions

What door width does the Airx 4 Feet Air Curtain cover?

The unit covers a 1200 mm (48-inch) opening. It suits standard double doors, wide single doors, and service entrances that need full-width coverage.

What power supply does the FM-3512S-L/Y-MC need?

The unit runs on 220V single-phase power at 60Hz. Single-phase wiring is standard in most commercial buildings, so no three-phase circuit is required.

How does a 48 Inch Centrifugal fan improve performance?

A 48 Inch Centrifugal fan generates higher pressure than an axial fan. This means the airstream reaches the floor with force intact and covers the full door width without weak gaps.

Where should the Airx Air Curtain be installed?

Mount the unit above the door or on the wall directly over the frame. Correct mounting height and alignment let the barrier span the entire opening.

Does an air curtain door barrier help with air quality?

Yes. The barrier limits dust, insects, and airborne particles from entering. Acting as the best air cleaner at the threshold, it reduces the load on interior filtration.

What spaces suit this air curtain?

Retail shops, restaurants, offices, hotels, supermarkets, showrooms, warehouses, and service entrances all benefit. Any doorway that opens frequently is a strong fit.

The FM-3512S-L/Y-MC gives commercial buildings a straightforward way to hold indoor comfort, cut energy loss, and keep entrance air cleaner throughout the day.