Schweigen EnviroShield 150mm Smart Shutter

Schweigen EnviroShield™ Modular Draft Stopper – Engineered in Germany for Ultimate Airtight Performance

Discover the future of home ventilation with the Schweigen EnviroShield™, the intelligent modular draft stopper designed to eliminate unwanted air infiltration in inline ducted exhaust systems. Featured in our in-depth YouTube video, this German-engineered innovation outperforms traditional gravity and spring-loaded dampers, delivering superior energy efficiency, airtight sealing, and customizable resistance for any home.

Why EnviroShield™ is the Smart Choice

Traditional draft stoppers have long been overlooked in inline fan systems — but with today’s strict airtightness standards and heat recovery requirements, proper backdraft protection is essential. The EnviroShield™ changes the game with a patent-pending modular magnetic snap system that ensures:

✅ Zero Draft When Off – Stays fully sealed against wind suction up to 100+ Pa (gale-force equivalent) ✅ Instant Full Open When On – Snaps wide open at typical fan pressure (~100–110 Pa) for unrestricted exhaust ✅ Customizable Resistance – Stack multiple modules to match your home’s wind exposure, roof height, or chimney design ✅ Blower Door Certified – Proven airtight performance with insulation rated at 2.2 W/m² ✅ Silent & Maintenance-Free – No motors, no noise, no wear-out springs

How It Works (As Seen in Our Video Demo)

Unlike gravity flaps that flutter open in the wind or spring dampers that resist full airflow, the EnviroShield™ uses precision magnets + weighted modular flaps:

1. Closed State: Magnets and module weight create a strong, airtight seal — even under 90–100 Pa negative pressure from roof venturi effect.
2. Activation: When your rangehood or exhaust fan turns on (~100–110 Pa), the system snaps fully open in layers for minimal resistance and maximum airflow.
3. Modular Design: Add 1, 2, or 3+ units to fine-tune opening pressure — perfect for coastal, high-wind, or tall-home installations.

“On a windy day, gravity dampers open easily. But EnviroShield™? It doesn’t budge until your fan demands it.” – Real pressure chamber test at 50 Pa, 90 Pa, and 110 Pa

Ideal For

• Silentline & inline exhaust fans
• Kitchen rangehoods (ducted to outside)
• Bathroom & laundry ventilation
• Passive house & energy-efficient builds
• Homes with HRV/ERV systems

Key Benefits

Upgrade your ducted exhaust system today. Stop energy waste. Stop cold drafts. Start saving with Schweigen EnviroShield™.

👉 Watch the Full YouTube Demo | Installation Guide | Shop Now

Available in 150mm, duct size. Made in Germany. Backed by Schweigen’s 10-year warranty.

Benefits include:

• Magnetic connection when shut, which can avoid wind induced openings.
• Exceptional thermal retention – retains heat up to 20× better than standard ventilation systems
• Energy efficiency – delivers up to 20% energy savings, cutting heating and cooling costs
• Year-round comfort – maintains a stable, comfortable indoor climate in every season
• Superior insulation – boasts a low U-value of just 2.2 W/(m²K) for outstanding thermal performance
• Optimized energy use – advanced insulation design minimizes heat loss for maximum efficiency
• Reflective thermal barrier – reduces heat transfer to enhance overall energy retention
• Flexible installation – designed for easy horizontal or vertical mounting to suit any setup
• Airtight performance – blower-door tested to >65 Pa, preventing leaks and ensuring precise environmental control

Included:  3 units attached to each other.  The more units you use the more resistance to external pressure the draft stopper is capable of.

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