Jupiter Hvac Equipments

external louvers

Product deatils


  • Frame and blades: 1.5 mm and 1.2 mm thick high quality extruded aluminium profiles.
  • Bird screen: 12 mm x 12 mm x 1.5 mm dia aluminium wire mesh as standard. 12 mm x 12 mm x 1 mm dia G.I wire mesh as optional.
  • Drain: 20 mm dia self drain holes at the bottom of the louver.
  • Filter frame: 20 gauge aluminium sheet.
  • Filter media: Expanded aluminium media.


  • The frame and blades are of high quality extruded aluminium profiled construction with the advantages of corrosion resistance and rigidity.
  • Composed two sets of inverted U – channels mounted vertically on two opposite rows.
  • Drain holes of diameter 20 mm are provided in two rows at the bottom of the louver for emptying filtered sand and dust.
  • Fixed with a removable washable extruded aluminium filter with aluminium mesh as the filter media.
  • Filters are available at 12, 25, 40 and 50 mm thickness as required.
  • Total assembly is designed to operate at medium and high velocities with high dust holding capacity at low resistance to air flow.
  • Can be manufactured from galvanized steel sheets as option.
  • Designed to separate and and dust from the air stream.
  • Generally used for ventilation applications and at inlet duct of air handling unit.

Standard Sizes

  • Natural anodized aluminium finish.
  • Powder coated color finish as per RAL color codes.
  • Flexibility of finishing available as option.
  • Concealed screw fixing as per the site conditions.

How to Order

ASTLF = FilterSpecify listed size Width x Height in mm x mmSpecify in numbersA = Aluminium anodized finish.
D = Damper
B = RAL 9010
C = Other RAL colors.
D+F = damper and filter

Ordering Example:

To select sand trap louver, damper and filter assembly, of size 1200 x 900 mm, quantity 75 nos, with aluminium anodized finish.

Order as: ASTL+F+D – 1200 x 900 – 75 – A.

Sand rejection efficiency:

Tests conducted on Model:ASTL at a face velocity of 0.5m/sec indicates a typical efficiency of

  • 90 percent on 200 to 700 microns.
  • 80 percent on 20 to 200 microns.
  • 50 percent on 1 to 70 microns.

Better efficiency can be achieved by sand trap louvers with washable aluminium filters.