Double Bank Rainproof Ventilation Louvres - PL2 and PL2/DT

Mega Union’s double bank rainproof ventilation louvre system is not only able to satisfy high rainproof performance requirements but also relatively high ventilation requirements; thereby effectively resolving the conflicts between ventilation and rain protection.

Choices of louvre for high rainproof and ventilation performance: double bank rainproof ventilation louvre and rainproof ventilation louvres with more than 2 layers.

Product Specifications

The blade spacing of Mega Union’s double bank rainproof ventilation louvre is 60 mm. Its overall structure is made of anti-corrosion aluminium 6063T5. The louvre blades should not be installed by drilling or fastening with screws but wedged into the structural supporting mullion so as to allow expansion or contraction along the horizontal direction without being deformed or distorted. In addition, this will ensure a uniform appearance of the louvres.

The maximum distance from the centre of the mullion should not exceed 1250 mm. Support points along the vertical direction served to satisfy the actual air flow pressure requirements should be computed & specified by a structural engineer.

Installation Horizontal or vertical
Standard Materials Aluminium, soft steel, stainless steel
Surface Treatment Mill finishing, sandalwood polyester powder coating, fluorocarbon coating
Supplementary Materials Mitred edge, silencer board (single-layered / insulated), acoustic components, anti insect net, anti bird net

Performance Summary

A multi-purpose ventilation louvre system that is able to achieve the lowest airflow resistance performance. The blades possess a streamline design without any sharp edges or protrusions in order to ensure the highest effectiveness of the air flow performance.

Water Penetration

PL2 - Water penetration

Coefficient of Entry / Discharge

PL 2 - Coefficient of Entry or Discharge

How does the double bank louvre work?

1. Air and rain water enters through the spaces between the blades.

2. Rain water flows into the second layer of the louvre and gets intercepted by the drainage channels.

3. Rain water flows along the blades into the hollow upright mullions and gets discharged onto the base plate.

Scroll to Top