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Choose warranty
3Y is the most-picked tier · 5Y includes a free auto-sensor
At 10 units: ₹15,394 each (10% off)
Series
Standard
Size
7 Feet (2100mm)
Power
440W
Warranty
3 Years Onsite Parts + 1 Year Service Warranty
Check delivery to your pincode
| Body Material | Aluminium |
| Power | 440W |
| Motors | 4 |
| Blowers | 7 |
| Airflow High | 3500 CFM |
| Airflow Low | 2550 CFM |
| Speed Settings | 2 |
| Voltage | 220V Single Phase 50Hz |
| Size | 7 Feet (2100mm) |
| Winding | 100% Copper Motor |
| Warranty | 3 Years Onsite Parts + 1 Year Service Warranty |
| Mounting | Above Door Wall/Ceiling |
Sizing tool
Enter your door dimensions and the temperature gap between indoors and outdoors. We'll recommend the AERSTER SKU that gives you a reliable seal — and tell you the airflow we spec it at.
Numbers are estimates based on standard mounting (2.5–3 m height). For non-standard installations contact our sales engineers.
CFM & size calculator
Recommendation
AERSTER FLOW 4 ft
Standard restaurant / retail entrance, doors up to 4.5 ft.
Customers buying this product typically pair it with these — add the bundle to your cart in one click.

This item·₹17,104

Companion·₹6,950

Companion·₹12,760
Bundle total
₹36,814
+ 18% GST
Why choose this product
Wholesale aluminium body air curtain 7 Feet direct from manufacturer — Aerster India. 440W, 4 Motor(s), 7 Blowers, 3500/2550 CFM. 220V Single Phase 50Hz. Warranty: 3 Years Onsite Parts + 1 Year Service Warranty. 100% copper motor ensures long-lasting performance. Lightweight rust-proof aluminium body. 2-speed control. Ideal for commercial doors, retail stores, offices, restaurants, hotels and warehouses. Blocks dust, insects and outdoor air. Reduces HVAC costs by up to 40%. GST invoice. MOQ 10 units. Pan-India delivery. Key Specs: • Power: 440W | Motors: 4 | Blowers: 7 • Airflow: 3500 CFM (H) / 2550 CFM (L) • Size: 7 Feet / 2100mm | Voltage: 220V 50Hz • Body: Aluminium | Winding: 100% Copper • Warranty: 3 Years Onsite Parts + 1 Year Service Warranty • Auto Sensor: Not Included
What you get out of the box
Installation video
Installation video — coming soon
Need an early walk-through? Ask the support team on WhatsApp and we'll send a recorded video the same day.
FAQ
Don't see your question? Ask on WhatsApp and a real engineer will reply within 4 working hours.
At least as wide as the door, ideally 100 mm wider on each side. For doors above 7 ft, install two units side-by-side and switch them together so the seal is uninterrupted.
No — they work together. The air curtain deflects 90–95% of insects at the entrance; the insect killer handles whatever gets in. Both are usually required for FSSAI compliance in food businesses.
Typical savings range 30–60% of the cooling lost through that doorway. For a busy restaurant entrance, that often translates to ₹8,000–18,000 a month. Payback under 12 months is normal.
Standard-series units run 60–66 dB(A) at full speed. The Silent series sits at 50–55 dB(A) — quieter than typical office HVAC. Most have multi-speed motors so you can run quieter when traffic drops.
A confident electrician can mount and wire most models in 2–3 hours. We provide installation guides, mounting hardware, and a phone-support number. Professional on-site installation is available across Indian metros for around ₹2,500 per unit.
Almost never. Heated curtains add a 3–9 kW load and are designed for European winters. In India, ambient curtains perform identically for thermal sealing — no winter use case justifies the running cost.
Standard series: 2 years on parts, 1 year on motor. Premium: 3 years comprehensive. Advanced: 5 years comprehensive with on-site replacement in metros. All warranties cover manufacturing defects, not water damage or unauthorised modifications.
Yes. Air curtains are typically wired to a 6–16 A circuit; a 4 ft unit draws around 200 W. You can run 2–4 units on a single dedicated circuit. For coordinated start/stop, use a shared contactor or a smart-switch.
Bulk procurement
Custom pricing within 4 working hours. Dedicated account manager. Credit terms for verified businesses. Consolidated GST invoices by state.