Nationwide UK Delivery
Trade Accounts Available
Technical Support
Nationwide UK Delivery
Trade Accounts Available
Technical Support
| Availability | In Stock & Ready to Dispatch |
| Bulk Orders | Project & Bulk Quantities Available |
| In-House Logistics | Reliable Delivery with Standard and Express Shipping Options |
The Swirl Diffuser Plenum Box 400 is a high-performance air distribution unit designed to provide efficient and uniform airflow in HVAC systems. It combines a plenum box with a swirl diffuser to deliver 360° air distribution, minimizing drafts and maintaining optimal comfort levels in commercial, industrial, and residential spaces. The 400 mm size makes it suitable for medium-duty duct systems, ensuring precise and quiet air delivery.
Material:
Plenum box: Galvanised steel or powder-coated sheet metal for durability
Diffuser: Aluminium or steel with precision-engineered swirl blades
Corrosion-resistant finish for long-term reliability
Specifications:
Size: 400 mm (square or circular dimension based on model)
Provides 360° swirl airflow distribution
Compatible with standard ductwork connections
Reduces drafts and noise in conditioned spaces
Easy installation with standard mounting hardware
Suitable for ceiling, wall, or floor-mounted HVAC applications
Durable and corrosion-resistant construction
Estimated Delivery: 2–5 Working Days
Shipping costs will be calculated during checkout.
Check delivery options at checkout
The Swirl Diffuser Plenum Box 400 is a high-performance air distribution unit designed to provide efficient and uniform airflow in HVAC systems. It combines a plenum box with a swirl diffuser to deliver 360° air distribution, minimizing drafts and maintaining optimal comfort levels in commercial, industrial, and residential spaces. The 400 mm size makes it suitable for medium-duty duct systems, ensuring precise and quiet air delivery.
Material:
Plenum box: Galvanised steel or powder-coated sheet metal for durability
Diffuser: Aluminium or steel with precision-engineered swirl blades
Corrosion-resistant finish for long-term reliability
Specifications:
Size: 400 mm (square or circular dimension based on model)
Provides 360° swirl airflow distribution
Compatible with standard ductwork connections
Reduces drafts and noise in conditioned spaces
Easy installation with standard mounting hardware
Suitable for ceiling, wall, or floor-mounted HVAC applications
Durable and corrosion-resistant construction
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Shipping Information • UK-wide delivery, including Northern Ireland, Scottish Highlands and remote locations. • Orders are processed within 1–2 working days (Mon–Fri). • Standard UK delivery takes approximately 2–5 working days from purchase. • Shipping costs are calculated at checkout based on order size, weight and delivery location. • Free delivery is available on selected orders. Additional charges may apply for large, bulky or remote-area deliveries. • Tracking details are provided once your order has been dispatched. • International shipping is available. Customs duties, taxes and import fees may apply and are the responsibility of the customer. • If your order arrives damaged, incorrect or incomplete, please contact us within 7 days of delivery. For full details, please see our Shipping Policy.
Returns must be requested within 7 days of delivery and approved before being sent back. Items must be unused, undamaged, and in their original packaging. Customers are responsible for return shipping costs, and a restocking fee of up to 25% may apply. Refunds are processed within 3–5 working days after inspection. For damaged, faulty, or incorrect items, please contact us within 7 days of delivery.
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