🌍 Worldwide shipping · 30-day returns · Rated Excellent on Trustpilot ★★★★½
Bigamart
Price
$19.08
Home/DIY & Tools/Building Supplies/Heating & Cooling/Registers, Grilles & Vents
neverest® RKI Backdraft Shutter 4 inch Inline Extractor Fan Backdraft Damper 100mm Fits Only with Metal Ducts - Robust, Galvanized Steel with Rubber Seal — image 1
Registers, Grilles & Ventsneverest✓ In stock

neverest® RKI Backdraft Shutter 4 inch Inline Extractor Fan Backdraft Damper 100mm Fits Only with Metal Ducts - Robust, Galvanized Steel with Rubber Seal

★★★★★
$19.08
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About this item
  • neverest RKI backflow flap is very robust and durable. The backflow flap opens and closes automatically. The strong stainless steel spring allows installation horizontally or vertically. Perfect for retrofitting ventilation systems without backflow flap. The rubber ring ensures a 100% seal and quiet closing when the exhaust fan is not in operation.
  • Function: The exhaust air backflow valve can be used universally in all standard round ventilation pipes and flex pipes according to DIN EN 1506. The backflow flap prevents the return of the exhaust air or the entry of cold outdoor air. The flaps open when the fan turns the exhaust air outwards and close automatically as soon as the airflow stops.
  • Versatile for use in all supply air and exhaust systems, such as air conditioners, dryers, cooker hood, dryers, heating systems, and ventilation systems in private homes, commercial, and industrial settings.
  • Perfect choice for hobbyists and professionals. The backflow flap is very stable, temperature-resistant and reliable. Installation is simple, just slide in the ventilation pipes and enjoy the benefits.
  • We are subject matter experts and there for you. If you have any questions or complaints, please contact our customer service directly. Your request will be processed immediately.
Product details
Brand
neverest
Manufacturer
neverest
Colour
Silver
Size
100mm

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
★★★★★
Excellent
4.5 average rating
See all reviews →
S
Sigalit
🇮🇱 · January 2026
★★★★★

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
🇦🇺 · November 2025
★★★★★

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 1–2 of 10 reviews

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