COLT Universal Louvre Brochure
A concise overview of the 1UL, 2UL and 3UL louvre systems.
Louvres
Universal Louvre – 1UL
Single Bank Universal Louvre
Colt 1UL is a single bank louvre system designed for screening or cladding applications where rain defence is not a primary concern. It is available with a shallow (50 mm), medium (75mm) or deep (100 mm) blade pitch to suit project needs. The roll-formed design ensures high airflow with minimal pressure drop and is ideal for use on plant rooms, rooftop enclosures, or car parks. For improved rain protection, consider using Colt 2UL or 3UL.
Product Highlights
- Available in 50 mm, 75mm or 100 mm blade pitch for installation flexibility
- Offers high airflow with minimal pressure drop
- Ideal for rooftop plant rooms, screens, and car parks
- Designed for projects where rain defence is not a priority
- Lightweight, durable and corrosion-resistant materials
- Compatible with bird/insect guards and blanking panels
Universal Louvre – 1UL
Technical Information
Performance Ratings
Rain Defence Classification: Class D (tested to BS EN 13030)
Aerodynamic Classification: Class 2 (0.3 < Cv < 0.399) – depending on configuration
Airflow Resistance: Low resistance for high-volume airflow
Free Area: 57% (varies by size/configuration) using standard industrial measurement
Applications
- Rooftop plant screen enclosures
- Car parks requiring ventilation
- Acoustic enclosures with optional panels
- Commercial and industrial façades requiring visual cover
Materials & Finishes
Materials: Aluminium (standard), galvanised mild steel, stainless steel
Finish Options: Mill finish, PPC (RAL colours), anodised aluminium
Design & Construction
Blade Pitch: 50mm, 75mm & 100 mm
Blade Profile: Chevron (roll formed)
Mounting Options: Surface-mounted, recessed, or integrated into cladding
Blade Fixings: Clip-on system for thermal movement accommodation
Panel Depth: 112mm Shallow, 182mm Medium & 167mm Deep (not including cill projection)
Panel Sizes: Bespoke sizing available
Accessories & Options
- Bird guards (galvanised/stainless steel)
- Insect mesh and/or Fly Guard
- Insulated or blanking panels
- Acoustic modules (CALM range)
- Access doors and integration with turrets
Installation & Maintenance
- Delivered pre-assembled or as kit of parts
- Minimal maintenance – periodic debris removal recommended
- Fast installation with concealed fixings
Testing & Compliance
Tested to BS EN 13030:2001 & HEVAC 4th Edition (Test Conditions: 13m/s wind, 75mm/hr simulated rainfall) and manufactured under ISO 9001.
Universal Louvre – 1UL
Downloads
Download the COLT Universal Louvre brochure or contact ALUMADE® for project-specific technical information.
View brochure
1UL technical information
Performance data, drawings and configuration information can be coordinated for your project.
COLT Louvre Systems