NBS Source
I'm a manufacturer
Compare variants

Universal Louvre - 1UL

Verified by manufacturer 4 days ago

Universal Louvre 1UL/SH

Colt International Ltd Variant:

The Universal Louvre 1UL is a roll-formed single bank system for rooftop or façade screening where high airflow is needed, and high levels of rain defence are not required.

Jump to:
+44 (0)23 9245 1111 Website

Application

Single bank louvre system designed for screening or cladding applications where rain defence is not a primary concern.

Applications:

  • Rooftop plant screen enclosures.
  • Car parks requiring ventilation.
  • Acoustic enclosures with optional panels.
  • Commercial and industrial façades requiring visual cover.

Description

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 (75 mm) 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.

Product Technical Information

Performance Ratings:

  • Rain Defence Classification: Class D (tested to BS EN 13030).
  • Aerodynamic Classification: Class 2 (Cv up to 0.3).
  • Airflow Resistance: Low resistance for high-volume airflow.
  • Free Area: 57% (varies by size/configuration) using standard industrial measurement.

Materials & Finishes:

  • Materials: Aluminium (standard), galvanized mild steel, stainless steel.
  • Finish Options: Mill finish, PPC (RAL colours), anodised aluminium.

Design & Construction:

  • Blade Pitch: 50 mm, 75 mm & 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 (galvanized/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.

General information

Color

Silver

Other

Finish

Mill

Embossed

Manufacturer guidance

[Finish, Anodised aluminium, polyester powder coated, acrylic, PVF2, and Stucco and HPS 200]

Material

Aluminium

Steel

Stainless steel

Length

Bespoke

Width

Bespoke

Height

Bespoke

Uniclass

Ss_25_50_45_45 Louvre screen systemsPrimary

CAWS

H11/140 Louvres

L10/490 Roof ventilators

L10/650 Metal louvres

Product range

Architectural Louvre Products
HVAC Products

Specification data - Louvre screen systems

Classification data

Screen framing

Aluminium.
Mild steel.
Stainless steel.

Louvres

-

Type

As screen framing.

Operation

Single bank shallow section, front louvres at 50 mm pitch.

Guidance for specification option:

Note: blade pitch and angle can be modified if required.

Blanking panels

None.
Single skin aluminium panel, mill finish.
Single skin aluminium panel with external decorative polyester powder paint finish to match louvres.
Insulated panel.

Acoustic panels

-

Facing

None.
Type R acoustic louvre panels.

Guidance for specification option:

Optimum acoustic performance with normal pressure drop.

Type LP acoustic louvre panels.

Guidance for specification option:

Normal acoustic performance with minimum pressure drop.

Banked

-

First bank

None.
Type R acoustic louvre panels.

Guidance for specification option:

Optimum acoustic performance with normal pressure drop.

Type LP acoustic louvre panels.

Guidance for specification option:

Normal acoustic performance with minimum pressure drop.

Second bank

None.
Type R acoustic louvre panels.

Guidance for specification option:

Optimum acoustic performance with normal pressure drop.

Type LP acoustic louvre panels.

Guidance for specification option:

Normal acoustic performance with minimum pressure drop.

System accessories

None.
Visible frame double door.
Visible frame single door.
Concealed frame double door.
Concealed frame single door.
Turret unit(s).
Triangular panel(s).
Circular panel(s).

Guards

None.
Aluminium bird guard.
Galvanized steel bird guard.
Aluminium fly guard.
Stainless steel insect mesh.

Manufacturer guidance

Louvre design should allow for additional resistance to airflow and reduced flow rate.

Dimensions

Guidance for specification option:

Insert requirements or drawing/ schedule reference.

Configuration

Horizontal.
Horizontal inverted.
Vertical.

Texture

Plain.
Perforated.
Stucco embossed.

Finish

Mill aluminium.
Anodized.

Guidance for specification option:

Consult manufacturer for options and insert requirements.

Polyester powder coated, RAL (total coverage).

Guidance for specification option:

Consult manufacturer for options and insert colour requirement.

All exposed surfaces and edges of components and assemblies are coated, excluding fixings and rivets.

Polyester powder coated, RAL (partial coverage).

Guidance for specification option:

Consult manufacturer for options and insert colour requirement.

Only external louvre blades, frames, corners and cills are coated, the remaining components are mill finish.

PVF2 (total coverage).

Guidance for specification option:

Consult manufacturer for options and insert colour requirement.

All exposed surfaces and edges of components and assemblies are coated, excluding fixings and rivets.

PVF2 (partial coverage).

Guidance for specification option:

Consult manufacturer for options and insert colour requirement.

Only external louvre blades, frames, corners and cills are coated, the remaining components are mill finish.

Performance

Aerodynamic: minimum performance coefficient (Cv) of 0.43 (inlet) and 0.38 (extract); Rain defence: Class D at all velocities.

Guidance for specification option:

Aerodynamic performance is equivalent to Class 1 to HEVAC 4th Edition.

Rain defence: To HEVAC 4th Edition.

Sustainability data

Material

Aluminium
Steel
Stainless steel

Literature

Colt Louvre Systems

Colt Louvre Systems