Astberg AHD-100 "No Show" Air Vent Diffuser (4 Inch)
Astberg AHD-100 "No Show" Air Vent Diffuser (4 Inch)
Product Title: Astberg AHD-100 "No Show" Air Vent Diffuser (4 Inch)
Achieve a seamless, minimal ceiling finish with the Astberg AHD-100 4-inch "No Show" Air Vent Diffuser. Designed to blend flush into plasterboard and drywall, it provides optimal airflow while remaining virtually invisible to match modern architectural aesthetics.
Key Features:
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Frameless "No Show" Design: Engineered for a completely frameless, flush ceiling installation that eliminates visible outer grilles.
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4-Inch Standard Size: Compatible with standard 4" (100 mm) round HVAC ducting systems.
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Perforated Plaster-In Frame: Features a perforated mounting ring that allows joint compound/plaster to adhere smoothly for a clean, crack-free integration into the ceiling.
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Optimal Air Distribution: Delivers efficient supply or extract ventilation without compromising on silent operation or air spread.
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Paintable Finish: Easily painted over along with your ceiling to match any interior color scheme seamlessly.
NET ZERO EMISSION
GREEN ENERGY
CO2 Control
Green Buildings
Engineered Airflow
Air in motion. Carbon at rest.
Every Astberg unit is tuned to move the maximum volume of air with the minimum draw of power — so your building breathes freely while the grid barely notices.
Air Quality Metrics
Measurable impact, every minute.
Aggregate performance from Astberg installations across commercial, residential and healthcare deployments.
Lower CO₂
Lower PM2.5
Lower PM10
Lower VOC
Fresh Air Exchange
The Air Path
How it breathes.
Four stages between stale and fresh. Follow the air through the unit.
Green Impact Estimator
What efficiency gives back.
Slide to match how you would run this unit. We will do the maths on the energy, money and carbon it hands back — every single year.
Your usage
Estimates compare this unit's rated draw against a conventional AC fan of similar airflow, at your local grid emission factor. Actual figures vary with speed setting and duct design.
Acoustics
Powerful. Not loud.
Thousands of cubic metres of air every hour, engineered to stay out of your conversations. Here is where this unit sits on the sound scale.
Sound pressure in dB(A), typical values at 3 m. The scale is logarithmic — every 10 dB drop is roughly half the perceived loudness.
