Working with Colt
Colt International Ltd is the UK’s largest manufacturer of louvres, with our 5,000 sqm factory in Havant, Hampshire. Our sales team is able to develop ventilation and screening solutions for any project, backed up by over 50 years of designing, manufacturing and installing louvre solutions.
We have dedicated Project Management and CAD teams that are focused on delivering the design you have specified, from drawing to handover.
We offer:
- Acoustic Louvres: providing effective noise reduction and air flow in a compact, cutting-edge design.
- Ventilation Louvres: offering a versatile solution which combines effective airflow and weather defence.
- Weather Louvres: featuring a triple-baked design for maximum protection against the elements.
- Screening Louvres: available in a wide range of colour options for a stylish, low-maintenance façade option.
- Glass Louvres for Natural Ventilation: helping to naturally light and ventilate internal spaces.
Contact Us
We deliver tailored solutions across Louvres, Smoke Control and Climate Control. For more information on how we can help you with your project, get in touch with our team.

