Keep your commercial indoor climate perfectly insulated with the heavy-duty GREE Air Curtain | 4 Feet, FM-1.25-12k. Specially optimized for wider main entrances across Bangladesh—such as larger shopping malls, corporate office double-doors, hotels, restaurants, and medical centers—this premium 4-foot (1200mm) air cutter creates a powerful, high-velocity invisible atmospheric wall. Engineered with a 3D streamlined cross-flow fan and running on a minimal 140W power load, it generates a massive 1650 m³/h air circulation rate to trap chilled indoor air while locking out harsh outdoor summer heat, street dust, toxic vehicle emissions, and flying pests.
The GREE FM-1.25-12k 4 Feet Commercial Air Curtain is a high-performance atmospheric barrier designed for overhead door installation. The primary function of this commercial-grade air cutter is to discharge a continuous, high-speed downward sheet of air stretching across a 4-foot entrance width.
This invisible downward stream functions as a physical wall that splits the indoor environment from the outdoor climate. By employing a microcomputer-controlled system and an optimized cross-flow fan design, the unit operates efficiently with minimal turbulent noise. It features both a physical manual control panel and a convenient wireless remote controller, allowing shop supervisors to shift between high-speed and low-speed settings based on daily customer foot traffic.
The authentic market retail price for the GREE 4 Feet Air Curtain (FM-1.25-12k) in Bangladesh ranges from ৳24,500 to ৳28,490 BDT, depending on localized import tariff structures, direct supply availability, and seasonal project campaigns. For commercial B2B fit-outs, factory installations, or bulk building contracts, you can secure specialized trade pricing and installation packages through Bhai Bhai Engineering.
For busy commercial facilities in Bangladesh that run centralized or multi-ton split/cassette air conditioning systems, leaving doors open results in immediate thermal loss and soaring operational overhead. The GREE 4-foot Air Curtain provides an essential operational safeguard because:
Maximized Energy Efficiency: It drastically limits cooling loss from open doors, keeping your primary commercial air conditioners from working in continuous high-amp states. This reduces commercial electricity bills by up to 30%.
Uninhibited Open-Door Retail Trading: Retail banks, super-shops, and cafés can keep their glass doors fully open to invite foot traffic without suffering sudden drops in indoor cooling.
Effective Dust, Insect, and Odor Repulsion: Busy Bangladeshi thoroughfares are plagued by mosquito swarms, flies, carbon soot, and industrial dust. The high-velocity 8 m/s air barrier stops these pollutants instantly at the threshold.
Industrial Durability (Electro-Galvanized Shell): The structural body is encased in a premium, anti-corrosion two-sided painted electro-galvanized metal housing, meaning it will not rust or discolor despite the highly humid local climate.
Installing a heavy 4-foot air curtain requires rigid structural level-balancing and secure overhead framework integration to achieve a flawless air seal. Bhai Bhai Engineering is the preferred commercial engineering partner in Dhaka:
100% Genuine Official GREE Stock: We guarantee completely brand-new, factory-intake equipment directly via official manufacturer batches with legitimate warranty protections.
Technical Installation Expertise: Our in-house technical crew evaluates entrance clearance lines and lintel strength to install your air curtain precisely for maximum aerodynamic efficiency.
Tailored B2B Quotations: We provide clear, transparent pricing breakdowns and bulk corporate contract structures for institutions, mosques, commercial markets, and factories.
On-Demand Maintenance Ecosystem: Located right at Vatara, Dhaka, our prompt service desk delivers long-term technical reliability, scheduled motor tune-ups, and genuine replacement parts.
Are you planning to upgrade your commercial infrastructure, open a new retail showroom, or secure your warehouse loading bay? Contact the sales consultants at Bhai Bhai Engineering for site dimensions, engineering estimates, and official project quotations.
Office Address: Podirdia, Khilbarirtek, Vatara, Dhaka-1212. (Located within the Nur-E-Madina Mosjid Complex)
Mobile Contacts: +8801722039029 | +8801880088146
Email: info@bhaibhaiengineering.com | hr@bhaibhaiengineering.com | bhaibhaiengineering51@gmail.com
Q1: What doorway height is the GREE 4 Feet Air Curtain suited for?
A: The GREE FM-1.25-12k model is optimized to maintain an unbroken air seal for commercial door heights between 8 to 10 feet (2.5 to 3.0 meters) from the floor.
Q2: How much electricity does the 4-foot model consume?
A: Despite its powerful 1650 m³/h air circulation rate, it has a rated power input of only 140 Watts, meaning it consumes minimal power while protecting your primary AC systems from massive energy losses.
Q3: Can this air curtain heat the room during the cold winter months?
A: No, this is an ambient-temperature air curtain. It does not integrate any electrical heating coils; its function is to recirculate the existing indoor air to build an aerodynamic barrier.
Q4: What specific official warranty terms apply to this unit?
A: The official manufacturer-backed GREE package includes reliable long-term coverage: a 1 Year Motor Warranty, 1 Year on Spare Parts, and 1 Year of Free Professional After-Sales Service.
Q5: What is the primary difference between the 3-foot and 4-foot GREE models?
A: The 3-foot (FM-1.25-9k) model is 900mm wide with a 110W motor and 1200 m³/h airflow, while the 4-foot (FM-1.25-12k) model is 1200mm wide with an upgraded 140W motor throwing 1650 m³/h of air to cover standard double-door entrances.
At Bhai Bhai Engineering, we take pride in our industry-recognized certifications and achievements. Our dedication to excellence in MEP (Mechanical, Electrical, and Plumbing) solutions is backed by various certifications in central air conditioning systems, fire protection, ventilation, electrical installations, and more. These certifications ensure we meet international standards and deliver top-notch service for your business.
Stay updated with the latest events and industry collaborations from Bhai Bhai Engineering. As leaders in MEP services, we actively participate in trade shows, seminars, and workshops to enhance our expertise and bring innovative solutions to the field. Discover our role in shaping the future of MEP design, installation, and maintenance services.
