Exterior Wall Ventilation Grille 100/125/150mm Exhaust Cover

Exterior Wall Ventilation Grille with Air Valve – 100mm / 125mm / 150mm

Keep your home's air fresh and dry with this durable ABS exterior wall ventilation grille. Designed for kitchens, bathrooms, and utility spaces, this exhaust duct cover features a built-in valve plate for efficient airflow control, preventing backdrafts and moisture from entering your home. Available in three pipe sizes — 100mm, 125mm, and 150mm — it's a versatile fit for most standard ducting systems.

Key Features

• Three Size Options: Compatible with 100mm, 125mm, and 150mm ventilation pipes — choose the size that matches your existing ductwork.
• Built-in Valve Plate: The integrated air outlet valve opens with airflow and closes when idle, keeping out insects, drafts, and moisture.
• Weatherproof ABS Construction: Made from high-quality, UV-resistant ABS plastic that withstands outdoor exposure without cracking or warping.
• Flanged Design with Filter: The flange and mesh filter make installation straightforward and help catch dust or debris.
• Dual Installation Method: Secure to the exterior wall with screws or simply insert into the corresponding-diameter ventilation pipe — no specialist tools required.
• Wide Application: Ideal for range hoods, bathroom exhaust fans, kitchen ducting, toilets, and any other interior-to-exterior ventilation system.
• Maintains Air Quality: Helps control moisture buildup, condensation, and stale air in enclosed spaces.

Specifications

Package Contents

• 1 × Exterior Wall Exhaust Ventilation Grille Cover

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Helpful Resource

For guidance on proper home ventilation and indoor air quality best practices, visit the U.S. EPA Indoor Air Quality: Ventilation in Homes page.

Note: Actual color may vary slightly from images due to monitor settings and lighting conditions. Please allow minor measurement tolerances (±1–2mm) for stated dimensions.

Learn more: Paternoster Vents

Frequently Asked Questions

Q: Which pipe diameter should I choose for my range hood or bathroom exhaust fan?

A: Measure the outer diameter of your existing ventilation duct or pipe opening before ordering. This exhaust grille cover is available in 100mm, 125mm, and 150mm sizes. Most standard bathroom exhaust fans use a 100mm or 125mm duct, while range hoods often require 125mm or 150mm. Select the size that matches your duct for a secure, airtight fit.

Q: Is this ventilation grille suitable for outdoor (exterior wall) use?

A: Yes. The grille is constructed from weatherproof ABS plastic that resists UV exposure, rain, and temperature fluctuations, making it fully suitable for permanent installation on exterior walls. The built-in valve plate also helps prevent rain, insects, and cold drafts from entering the duct when the fan is not running.

Q: How do I install this exterior wall exhaust grille cover?

A: Installation is straightforward. You can either insert the grille's spigot directly into your ventilation pipe of the matching diameter, or use screws through the flanged face plate to mount it flush against the exterior wall. No special tools are required, and most installations can be completed in minutes.

Q: Does this grille come with a filter or mesh to block insects?

A: Yes. The grille features an integrated filter/mesh as part of its design to help block insects, debris, and dust from entering the duct, while still allowing efficient airflow when the exhaust system is operating.