BLHP90 Series

BLHP90 Series. 90mm pitch flanged and recessed type louvres offering increased weather resistance.

Also available as site assembled system

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The BLHP90 Series louvres comprise louvre blades inclined at 45° and mounted at 90mm centres within 100mm, or 140mm deep frame. Galvanised bird screen supplied as standard. Frames can be flanged for surface mounting or recessed to give frameless appearance. The bottom blade is extended over the outer frame to prevent ingress of water and provide drainage from the louvre face.

The louvre blades incorporate drain channels to increase weather resistance whilst retaining excellent pressure drop and free area figures.

Louvre blades secured by a minimum of four no.8 x 19 screws per blade to provide robust assembly.  Louvres over 1000mm wide include extruded aluminium channel mullion to rear to further increase strength.

Louvre sizes made to suit customer requirements.

Recommended maximum. size for a single unit:  Upto 2000 x 2000.  Larger sizes accommodated in multi-panel systems.


Recommended maximum. size for a single unit: upto 2000 x 2000.  Larger sizes accommodated in multi-panel systems.


Nominal free area: 58.3% with bird mesh fitted

Maximum BSRIA weather test rating November 2019 (simulated rainfall of 75mm/hr, wind speed of 13m/sec):

96.32% BLSHP90/140/BG (class B)

99.35% BLSHP90/140/IM (class A)

BLHP90 Series

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