Name: Round Metal Flange for HVAC & Ceiling Plenums, Pre-Drilled Fixing Plate
Brand: Ventmann UK Ltd.
SKU: FL125100
Price: 6.45 GBP
Availability: InStock

Round Metal Flange for HVAC & Ceiling Plenums, Pre-Drilled Fixing Plate - Ventmann UK

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Round Metal Flange for HVAC & Ceiling Plenums, Pre-Drilled Fixing Plate

Round Metal Flange for HVAC & Ceiling Plenums, Pre-Drilled Fixing Plate

SKU: FL125100

£6.45

(excl. VAT)

to see your exclusive price

Reducer

125mm to 100mm

160mm to 100mm

160mm to 125mm

160mm to 150mm

200mm to 125mm

200mm to 150mm

200mm to 160mm

Quantity

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Use our PRODUCT SELECTOR, add your desired flow rate for the specific product, and check under the generated results in the section: Matching Plenum Boxes.

Installation Note: Choosing the Right Plenum Box Type

When specifying and installing Ventmann Plenum Boxes, the orientation of the HVAC ductwork connection (where the air comes from) dictates the optimal box type for best acoustic and thermal performance.

Key Installation Observation:

For "From Above" (Top Entry) Installations: Please select the Acoustic Plenum Box (GTG Series). This type is designed to primarily address and mitigate sound transmission from the ducting system into the occupied space, which is typically the priority for vertical (top) connections.
For Lateral (Side Entry) Installations: Please select the "V" Shape Insulated Thermo Box (VTBOX Series). This type is insulated and features the specific "V" shaped air path required for optimal thermal regulation and air delivery when connecting from the side.

Use our PRODUCT SELECTOR, add your desired flow rate for the specific product, and check the Generated Results.

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 PLINE 1 SLOT

- Download the BIM Object for PLINE 2 SLOTS

- Download the BIM Object for PLINE 3 SLOTS

Round Metal Flange for HVAC & Ceiling Plenums

This Round Metal Flange for HVAC & Ceiling Plenums is a durable, precision-cut mounting plate designed to provide a secure and airtight connection between ductwork, ceiling plenums, diffusers, and ventilation components. Manufactured from high-quality metal with a smooth finish, it features pre-drilled fixing holes for fast and hassle-free installation on site.

Ideal for HVAC installers, contractors, and manufacturers, this fixing plate ensures strong mechanical support, reduces air leakage, and improves the overall performance of your ventilation system. The rigid construction ensures long service life even in demanding commercial environments.

✔ Compatible With Multiple Plenum Sizes

This flange model is available in a range of reduction sizes, allowing you to adapt different duct diameters to your plenum connection quickly and safely.

➡ For 160 mm Plenums, you can use:

190 mm → 150 mm
190 mm → 125 mm
190 mm → 100 mm

➡ For 160 mm Plenums, you can use:

160 mm → 100 mm

➡ For 200 mm Plenums, use:

230 mm → 160 mm
230 mm → 150 mm
230 mm → 125 mm

These options ensure maximum flexibility and compatibility across a wide range of duct sizes and ceiling plenum configurations.

Key Features:

Round metal construction for strength and durability
Pre-drilled fixing holes for quick installation
Designed for HVAC systems, ductwork, diffusers, and ceiling plenums
Ideal for adapting various duct diameters
Clean, smooth finish suitable for commercial and residential installations

Round Metal Flange

Ease of Installation

Ventmann Round Metal Flange for HVAC & Ceiling Plenums

The Ventmann Round Metal Flange is designed to provide a secure, professional connection between HVAC ductwork and ceiling plenum boxes. Manufactured for reliability and ease of installation, it ensures airtight performance while supporting clean, well-coordinated ventilation assemblies in both residential and commercial projects.

Featuring a pre-drilled fixing plate, the flange allows for fast, accurate alignment and secure fixing to plenum boxes or ceiling plenums, reducing installation time on site and ensuring long-term stability.

Key Features & Benefits

Robust metal construction for durability and long service life
Pre-drilled fixing plate for quick, precise installation
Airtight, stable connection between round ducts and plenums
Suitable for residential, commercial, and light industrial HVAC systems
Ideal for use with MVHR and mechanical ventilation systems
Compatible with Ventmann plenum and diffuser solutions

Available Size Combinations

The Ventmann Round Metal Flange is available in the following configurations to suit a wide range of ducting and plenum requirements:

Ø160 to Ø100 mm
Ø190 to Ø100 mm
Ø190 to Ø125 mm
Ø190 to Ø160 mm
Ø230 to Ø125 mm
Ø230 to Ø150 mm
Ø230 to Ø160 mm

Typical Applications

Ceiling and soffit plenums
HVAC distribution systems
MVHR installations
Residential and commercial ventilation projects

Engineered for performance and practicality, the Ventmann Round Metal Flange ensures a secure, efficient interface between ducts and plenums, supporting high-quality airflow distribution and professional installation standards.