Rectangular Ductwork
High-quality rectangular ductwork designed, fabricated, and installed for efficient HVAC performance in commercial and industrial buildings. Built to DW/144 standards, delivered on time, and tailored to your space, system layout, size, and required connection details.
Reliable Rectangular Ductwork for Commercial HVAC Systems
We manufacture and install HVAC rectangular ducts that support steady air movement, maximise efficiency, fit tight building layouts, and meet strict UK compliance requirements. From one-off builds to large-scale projects, our team delivers dependable, made-to-measure ducts, fittings, and connection solutions.
Rectangular Ductwork – Service
Rectangular ductwork is ideal where ceiling voids, risers, or architectural constraints limit the use of circular ducting. Each run is custom fabricated to match your drawings, airflow requirements, pressure class, and every critical dimension.
All ducting is produced from quality sheet metal for durability, airtightness, and long-term performance across ventilation systems, with duct size, length, and mm tolerances checked before delivery.
Key Benefits of Our Rectangular Ductwork
Space-efficient design
Ideal for tight ceiling voids, risers, and complex layouts where circular ducts won’t fit, with each dimension planned around the available space.Optimised airflow performance
Correct aspect ratios, duct size, and connection design help reduce pressure loss, noise, and wasted air.DW/144 compliant fabrication
Manufactured to recognised UK duct standards, including accurate mm measurements where required.Durable sheet metal construction
Built for long-term performance in busy buildings and demanding ventilation systems.Custom-built to your drawings
Made to exact dimensions with compatible fittings, bends, tapers, transitions, and length requirements.Efficient, low-leakage systems
Built for a wide range of HVAC systems where air efficiency and quality matter.
What’s Included in Our Rectangular Duct Services
- Rectangular duct fabrication in bespoke and standard size options
- On-site installation where required
- Custom HVAC ducts for ventilation systems
- Rectangular duct fittings, bends, shoes, and connection parts
- Rectangular duct profiles, flanges, support rings, and mounting track
- Rectangular to round transitions for spiral duct connection
- Sealant, joints, nuts, bolts, channel, and accessories for low leakage
- Compliance with SMACNA rectangular duct construction principles
- Sheet metal fabrication checked to mm detail for durability
- Designed for 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.
Our Simple Process
Drawing Review
We review your drawings, duct sizes, pressure class, installation requirements, and every key dimension.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, and DW/144 compliance before dispatch.Delivery Or Installation
Ductwork is delivered on schedule or installed by our experienced ducting engineers, with trade counter support available for parts.Final System Check
We ensure correct fit, alignment, air movement, and smooth efficiency across the system.
Why Choose CVK Ductwork Services
- Specialists in ducting for business and industrial buildings of different sizes 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, and industrial sites
We regularly support projects including:
Speak with our team today for expert advice, fast turnaround, 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 keep the wider programme moving. CVK Ductwork can support this practical side of the job, helping contractors source 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 easier 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 parts.
CVK also handles distribution and deliveries, so fabricated items and related accessories can be planned around the needs of the job. Whether the requirement is for rectangular ductwork 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.
- Coordinated ductwork supply
- Fewer missing parts
- Reliable project deliveries
Connecting Into Complete Ventilation Systems
Rectangular ductwork is often one part of a larger air movement 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 supply 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 sections can be used where space is limited, while compatible fittings help carry air through changes in direction, level or profile without turning the job into 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. That 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.
- Compatible system components
- Practical duct connections
- Clearer project coordination
Rectangular Duct FAQ's
Is rectangular ductwork suitable for low-pressure systems?
Yes. We design and manufacture low-pressure rectangular ducts that meet air volume, noise, and efficiency requirements.
Do you provide custom sizes?
Absolutely. All ductwork is fabricated to your project’s exact dimension, size, length, and aspect ratio.
Are your ducts compliant with UK standards?
Yes. All rectangular ducts are manufactured in line with DW/144 requirements, with mm accuracy checked where required.
Can you connect rectangular ducts to round systems?
Absolutely. Each run is fabricated to your project’s exact dimensions, size, length, and aspect ratio.
