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