Rectangular Ductwork

High-quality rectangular ductwork designed, fabricated, supplied and installed for efficient commercial HVAC performance. Manufactured to DW/144 standards, tailored to your layout, dimensions, overall size, offsets, connection details, metal thickness and ventilation system requirements, then scheduled for reliable delivery.

Reliable Rectangular Ductwork for Commercial HVAC Systems

We manufacture, supply and install rectangular HVAC ducts that support steady HVAC ducting performance, deliver efficient airflow, fit tight building layouts, and meet strict UK compliance requirements. From one-off pieces to larger projects, our expert team delivers bespoke, made-to-measure ducts, fittings, turning vanes, and joint solutions.

Rectangular Ductwork – Service

Rectangular ductwork is ideal where ceiling voids, risers, offset routes, or architectural constraints limit the use of circular ducting or round duct. Each run is custom fabricated to match your drawings, airflow requirements, pressure class, depth, and every critical dimension, making best use of restricted space.

All ducting is produced from quality sheet metal for durability, airtightness, and long-term performance across ventilation systems, with duct size, length, mm tolerances, profile and joint quality checked before delivery.

Key Benefits of Our Rectangular Ductwork

Space-efficient design
Ideal for tight ceiling voids, risers, offset changes, and complex layouts where circular ducts will not fit, with each dimension and depth planned around the available space.
Optimised airflow
Correct aspect ratios, duct sizes, and connection design help reduce pressure loss, noise, and wasted air movement.
DW/144 compliant fabrication
Manufactured to recognised UK duct standards, including accurate mm measurements, standard sizes and the correct metal gauge where required.
Durable sheet metal construction
Built to maintain long-term performance in busy buildings, offices, kitchens and demanding environments.
Custom-built to your drawings
Made to exact dimensions with compatible fittings, bends, tapers, transitions, turning vanes, and length requirements.
Low-leakage systems
Built for a wide range of HVAC systems where air efficiency, quality, and dependable products matter.

What’s Included in Our Rectangular Duct Services

Rectangular duct fabrication in bespoke and standard size options

On-site installation where required, with a visit arranged around project requirements

Custom HVAC ducts for ventilation systems and extraction environments

Rectangular duct fittings, bends, shoes, and connection products

Rectangular duct profiles, flanges, support rings, and mounting track

Rectangular to round transitions for spiral duct connection

Sealant, joint parts, nuts, bolts, channel, and accessories for low leakage

Compliance with SMACNA rectangular duct construction principles
Sheet metal fabrication checked to mm detail for durable performance
Designed to determine air volume, pressure, space, and project constraints
Accuracy-checked to reduce leakage and improve system efficiency

Need wider system support? We also work as experienced ductwork contractors, supplying ventilation systems, fittings, distribution, deliveries, and HVAC ducting solutions for trade and industrial projects. You can purchase individual pieces or a coordinated package, making it easy to match products across the full line.

Our Simple Process

Drawing Review
We review your drawings, duct sizes, pressure class, installation requirements, and every key dimension, including depth, making sure the brief is clear before manufacture.
Bespoke Fabrication
Custom ducts are manufactured in house using accurate profiles, corners, flanges, and joints in the required mm gauge.
Quality Control
Each section is checked for build quality, sealing, connection fit, turning detail, and DW/144 compliance before dispatch.
Delivery Or Installation
Ductwork is planned for reliable delivery or installed by our experienced ducting engineers, with trade counter and shop support available for parts and products.
Final System Check
We ensure correct fit, alignment, airflow, and smooth efficiency across the system, then send the agreed items for delivery or handover in an easy, organised way.

Why Choose CVK Ductwork Services

Specialists in ducting for business and industrial buildings of different sizes, needs, and uses

In-house fabrication for full quality control, accurate length, and reliable mm tolerances

Fully compliant with UK duct standards for ducts, fittings, and ventilation systems

Clear pricing, dependable lead times, and trade counter help for fittings and accessories

Proven experience across retail, offices, kitchens, industrial sites, and demanding environments

We regularly support projects including:

HVAC upgrades

Kitchen extraction systems

Office ventilation systems

Industrial extraction systems

Send your drawings or get in touch with our expert team today for expert advice, fast turnaround, dependable delivery, and compliant duct solutions.

Built Around Your Site Needs

Trade ducting projects often depend on more than the duct sections themselves. The right rectangular ductwork needs to arrive with the fittings, flanges, sealant, channel, nuts, bolts and installation accessories required to maintain the wider programme. CVK Ductwork can support this practical side of the job, helping contractors purchase the parts needed for a clean connection between ducts, grilles, dampers and other ventilation system components.

For buildings with limited space, awkward service routes or multiple trades working in the same area, rectangular ducts can make it easy to work with the available dimensions and route air through the system. Sections can be manufactured to suit the required size, with compatible bends, shoes and turning vanes included where the project calls for them. This helps reduce unnecessary site delays caused by missing or mismatched pieces.

CVK also handles distribution and deliveries, making fabricated items and related accessories easier to plan around the needs of the job. Whether the requirement is for a rectangular duct run on a ventilation system, an extraction system or part of a wider HVAC package, the focus is on dependable supply, accurate manufacture and straightforward coordination from order through to delivery.

Connecting Into Complete Ventilation Systems

Rectangular ducts are often one part of a larger air movement ventilation system. On many business and industrial buildings, the duct route may need to connect with spiral ductwork, volume control dampers, fire dampers, fans, heater batteries, flexible duct and grilles. CVK Ductwork can provide the ducting and associated components needed to form these connections, keeping the installation practical and consistent across the full ventilation layout.

This is particularly useful where different areas of a building have different demands. A kitchen extraction system, office ventilation route or general HVAC system may each need a different duct size, fitting type or connection detail. Rectangular ducting can be used where space is limited, while compatible fittings help carry air through changes in direction, level or profile without making the job a patchwork of unsuitable parts.

Because CVK works across ductwork manufacturing, fabrication, trade ducting, ventilation systems and extraction systems, customers can discuss the full route rather than treating each item in isolation. Please note that staying in touch with the expert team makes it easier to order ducts, dampers, fittings and accessories that suit the same project requirements. The result is a more organised package for contractors who need quality manufactured sections that fit the building and support the intended system use.