Why Standard Spiral Duct Fittings Are a Smart Choice for Your Ventilation System

Author: Jonathan Wheat Date: 27th August 2025

When designing a ducting system, one of the most important decisions you can make is choosing the right fittings. Whilst sealed duct fittings have their advantages with regards to efficacy and eliminating air leaks our standard spiral duct fittings remain a cost-effective and reliable solution for many projects. At iDuct, we take pride in manufacturing our spiral duct fittings using high-quality galvanised steel and ensure they are fully compliant with DW144 standards, giving you confidence in both performance and durability.

iDuct 90 Degree Fabricated Duct Bend - BF-90

Lower Costs Without Compromising Quality

One of the main reasons to choose standard spiral duct fittings is the significant cost savings compared to sealed systems. For projects where absolute airtightness is not critical ,standard fittings offer an excellent balance between affordability and performance. By reducing upfront costs, you can allocate budget more effectively across your project.

Built to Last with High-Quality Galvanised Steel

At iDuct, we take pride in the quality of our materials. All our standard spiral duct fittings are manufactured right here in the UK from high quality galvanised steel, which provides excellent protection against corrosion, ensuring a longer lifespan even in demanding environments including systems that are fitted externally.

Manufacturing duct fittings

Fully Compliant with DW144 Standards

Quality and compliance is a critical factor for all duct fitters. Every fitting we manufacture meets the requirements of the DW144 specification, the industry benchmark for ductworks. This guarantees that our fittings deliver the strength, consistency, and safety demanded by professional contractors and building regulations in the UK and beyond.

A Practical Choice for Many Applications

While sealed ductworks are ideal for environments that require lower leakage rates, standard spiral duct fittings remain the most practical choice for many ventilation installations. They are easy to install, widely compatible, and deliver dependable airflow performance, all at a lower cost than sealed and other ducting. At iDuct we also offer a range of sealants and tapes for quick and cost effective insultation.