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Bigamart
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$14.51
Home/DIY & Tools/Building Supplies/Heating & Cooling/Registers, Grilles & Vents
Vents 100mm Black External Gravity Vent Grille – 155x155mm Diameter Outside Wall Cover for Extractor Fans, Bathroom & Tumble Dryer — image 1
Registers, Grilles & VentsVENTS UK✓ In stock

Vents 100mm Black External Gravity Vent Grille – 155x155mm Diameter Outside Wall Cover for Extractor Fans, Bathroom & Tumble Dryer

★★★★★
$14.51
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About this item
  • Fits standard 100mm ducting – Gravity grille with 100mm (4”) rear spigot; overall external size 155 × 155 mm for a neat wall or ceiling finish.
  • Non-return shutters – Three gravity flaps open with airflow and close when the fan is off, helping block draughts, rain, noise, odours, insects, and debris.
  • Push-fit installation – Simple push-fit connection to 100mm ducting; can be sealed with mastic, cement, or tape if required for a secure finish.
  • Wide ventilation compatibility – Suitable for bathroom and kitchen extractor fans, whole-house ventilation, HVAC, passive airflow, and heat recovery systems.
  • Building Regulations compliant – Manufactured in line with Approved Document F, supporting compliant domestic ventilation installations.
Product details
Brand
VENTS UK
Manufacturer
VENTS UK
Colour
100 Mm Black Gravity Grille

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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