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Small Louvres & Grilles

Small Weather Louvres and Grilles

38mm Pitch / Series WL38

Model WL38

WL38 series weather louvres offer the smallest format weather louvre available from HVC. The blade profile coupled with a 38mm pitch gives good resistance to the ingress of rain in most weather conditions.

Construction

Variety of extruded aluminium frame styles to choose from.

Unique blade profile.

Lengths over 2000mm usually split into sections with a hairline mullion.

Options and accessories

QEF can supply you a standard 38mm pitch Weather Louvre, or a customised unit made to your exact specifications. Please see our list of options and accessories below for an overview of what we can do.

  • Volume control damper –Combination units of a WL38 louvre and an adjustable volume control damper of traditional or UPVC construction can be manufactured.
  • Bird/Insect mesh –Either type of mesh can be fitted to the rear of a unit to prevent birds, insects or other foreign objects being able to penetrate the louvre.
  • Finishes-HVC can polyester power coat or nylon coat your WL38 to any RAL or BS colour, non painted (STD) finish is mill.
  • Blanking plate -Blanking plates enable a portion or all of the louvre to be disabled.
  • Fixings –Countersunk fixing holes and screws, or concealed fixing lugs are available to aid fitting.

Blade profile & spacing

 

Frame types

                

25mm flat               30mm flat                 50mm flat            75mm flat

Flange                                Flange                   Flange                        Flange

                                  (STD)

Technical information

 

Free area –Approx 50%.

WL38 Mass/M2 face area = 12KG

We do not make concealed louvres using WL38 blade, WL50 blade is used instead as standard. Lengths of mullion, strong enough to ensure negligible flex in the louvre, run vertically behind the blades to hold them in place, leaving no external frame whatsoever.   

Countersunk fixing holes and screws

 

Louvres can be supplied with countersunk fixing holes already punched into the flange. Screws, powder coated to the same colour as the louvre are supplied as standard.

Fixing Lugs

 

Fixing lugs provide a concealed method of affixing a unit to the wall. The lugs protrude from the back of the unit, they can then be bolted to the surrounding masonry, timber or duct. This method does require access to the area behind the louvre for fixing. With recessed louvres, ‘L’ brackets will be supplied if fixing lugs are specified.