Home
products
Side Round Diffuser

Side Round Diffuser

SKU: SIDE0100

£122.37

(excl. VAT)

to see your exclusive price

Quantity

Frequently bought together

Inline Foam Damper From £8.29

Quick Release Clip 175 dia £1.10

Flat Spigot (90°) - Galvanised - 80mm - 250mm dia From £4.70

Acoustic Aluminium Flexible Ducting – MVHR, AC & HVAC Suitable From £35.72

Insulated Aluminium Flexible Ducting From £38.90

Non-Insulated Aluminium Flexible Ducting From £12.05

5-YEAR Manufacturer’s Warranty

NEXT DAY DELIVERY – Orders placed before 11:00 AM. Otherwise, shipped within 1–2 business days via express post. 14 day returns. Read more in our Shipping policy and Refunds & Returns guide.

SAME DAY DELIVERY - please, contact us at sales@ventmann.co.uk or call (0)1283 240025 for a quote.

View our Technical Catalogue

View our Installation Instructions

Download the BIM Object for PCIRCLE 100-125mm

Side Round Diffuser

The Ventmann Side Diffuser is a high-quality, versatile air diffuser vent. The diffuser is made of durable materials and features a sleek, modern design. It is easy to install and use, and it can be adjusted to provide a variety of airflow patterns. We might be biased, but we think this design works really well on walls where it provide a decorative air vent cover that looks stunning.

Features:

Made of durable materials
Sleek, modern design
Easy to install and use
Adjustable airflow patterns
Can be installed on walls or ceilings
Ideal for use in homes, offices, and commercial spaces
Adjustable gap height to change airflow speed

Benefits:

Can help improve air quality
Can help provide a comfortable and healthy environment
Reduces noise levels
Increases energy efficiency
With upstream filtering, can help to reduce allergens and pollutants in the air

Inaudible Flow Rates - Side Round Diffusers

The following airflows give a noise level of 17dB. Installers often use 25dB as the level of inaudible noise. We use a lower figure to allow for other fixings such as dampers and other constrictions upstream of the diffuser and also to allow for some margin of error.

Pairs well with

Versatile Application

INNOVATIVE SIDE ROUND DESIGN

The Ventmann Side Round Diffuser is an excellent choice for a wide variety of environments, including:

Residential Homes: Providing discrete, effective ventilation in living rooms, bedrooms, and kitchens.
Modern Offices: Maintaining a quiet, comfortable working environment while seamlessly blending with contemporary architecture.
Commercial Spaces: Offering high performance and aesthetic appeal in retail stores, galleries, and lobbies.

Its adjustable gap height and versatile mounting options make it a go-to solution for both supply and extract air systems.

SIDE PRODUCT GALLERY

VENTMANN SIDE Diffusers

Discover our SIDE Line

Ventmann UK PCIRCLE Architectural Gypsum Air Diffusers

Inaudible Flow Rates - Side Round Diffusers

The flow rates provided below ensure a remarkably low noise level of 17 dB(A).

Installer Standards: While many installers consider 25 dB(A) to be the level of inaudible noise, we deliberately use a lower figure (17 dB(A)).
Safety Margin: This conservative lower figure allows for common upstream constrictions, such as dampers and other fixings, ensuring truly silent operation in your space, even under less-than-ideal conditions.

Techical Parameters

View Technical Specs & Guides

Frameless Ventilation Valves: The Complete UK Guide (Round, Square & Linear)

12 hours ago

A frameless ventilation valve has no visible rim: the body is plastered into the ceiling and the face finishes flush. Sizes, airflow rates, Part F duties and how to install one.

Free HVAC Tools & Engineering Resources: 8 Calculators Worth Bookmarking

7 days ago

Eight free, browser-based HVAC tools worth bookmarking — cooling load, Part F ventilation and duct sizing calculators, refrigerant pre-charge, silencer selection, psychrometrics and more. No login needed.

Acoustic Box vs Thermo Box: Which Plenum Does Your Slot Diffuser Need?

7 days ago

Acoustic Box (GTG) or Thermo Box (VTBOX)? How Ventmann’s two plenum boxes differ — top entry vs side entry, noise reduction vs insulation — and which one your linear slot diffuser needs.

Side Round Diffuser