BL50BF Series

Aluminium extrusions type 6063-T6 to BS1474 having a minimum thickness of 1.6mm . Mitred frame joints TIG welded for additional strength.

The louvre comprises louvre blades inclined at 45° and mounted at 50mm pitch within 50mm deep frame for mounting within standard 45mm thick door. Galvanised bird screen supplied as standard. Frames can beflanged 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. Louvre complete with with back frame for return side of door, to mask any rough cut edges.

Louvre blades secured by a minimum of four no.8 x 19 screws per blade to provide robust assembly.

Louvre sizes made to suit customer requirements.

Nominal free area: 50%

Maximum BSRIA weather test rating (simulated rainfall of 75mm/hr, wind speed of 13m/sec): 89.42% Class C

Face Velocity (metres per second)
Pressure drop (Pascals)2.489.9122.339.65

Supplied as standard with flanges undrilled. Fixing through flange or nec

  • Insect Screen
  • Blanking Panels (single skin plate or insulated blanking panel)
  • Vermin Guard
  • Removable core/hinged core
  • Alternative blade pitches
  • Panels to suit non-standard door depths
  • Mill finish as standard (untreated and unpolished aluminium).
  • Polyester Powder coatings to any standard RAL or BS 4800 range colours.
  • Special finishes available on request.