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Since the launch of the American designed Whirlybird in 1940, this turbine ventilator has remained the market leader, worldwide.

Differentiating features

Made entirely of premium quality aluminium, the Whirlybird is light in weight and rust resistant. The Whirlybird GT-12 is available in a galvanized steel model.

Tests conducted by the Construction Research Laboratory Incorporated in Miami prove the Whirlybird's sturdiness in wind speeds gusting up to 190km per hour.

Warranty, sizes and colour options

• The Whirlybird is backed by a 5 year warranty.
• It's available in two sizes – a 300mm diameter neck and a 350mm diameter neck.
• Its standard milled aluminium finish can be colour-coated to match your roof

Technical specifications

300 mm	350 mm

Size	Material	Extraction rate	Height (mm)	Width (mm)	Length (mm)	Package weight (kg)
300	Aluminium	924 m³/hr	480	490	520	2.9
350	Aluminium	1155 m³/hr	560	580	500	3.3
300	Galvanised	924 m³/hr	470	480	530	3.85

General specifications

The Whirlybird turbo vents originate from the USA where it has been in use since 1940. Whirlybird has spread throughout the world and has become the biggest selling turbo vent. Whirlybirds were introduced to South Africa in 1983 where they started a trend and became the most commonly used turbo vent. They are now fully assembled in South Africa. Simple installation- DIY instructions available or let your local dealer arrange installations.

All-aluminium, rust-free materials
The Whirlybird is constructed entirely of high-quality aluminium which makes it light-weight as well as rust-resistant. The Whirlybird GT-12 is available in a galvanized steel model.

Sturdy construction
The 21 aerofoil blades are riveted laterally to form a sturdy spherical dome. The dome incorporates a rigid spider-type framework attached to a vertical spindle via two ball bearings. All components are shaped for strength and riveted at every connection. Tests conducted by the Construction Research Laboratory Inc. in Miami, USA, proved that the Whirlybird could withstand winds gusting up to 190km per hour.

Versatile mounting
The dome assembly is mounted on a cylindrical neck that incorporates a sliding joint and flange. The flange facilitates water-tight attachment to most types of roof and the sliding joint enables the neck to be elbowed, so that the spindle can be set vertically on roofs pitched between 0û and 45 degrees.

High quality bearing system
The bearing system comprises high quality, permanently sealed, ball bearings to provide long life and ensure silent operation in slightest breeze. Ball bearings are superior to the bush-type bearings used in many other turbines. The Whirlybird turbine ventilator is an exceptionally lightweight dome.

Low inertia
The lightness of the dome and the high quality of the ball bearings assure low inertia, so that the dome rotates silently about its spindle under the influence of the slightest convection current or breeze.

Waterproof and dust repellent
The aerofoil vanes incorporate rolled edges shaped to prevent rain and dust from penetrating the dome. Extra-large flashing enables leak-proof installation

Maintenance-free
The Whirlybird is resistant to rust and corrosion and the bearings are lubricated with heat resistant grease and permanently sealed, thus providing complete protection against dust and moisture. These features render the Whirlybird entirely maintenance-free.

Warranty
The Whirlybird is backed by a three year warranty covering defective materials and manufacture.

Proven performance
The CSIR has tested the air-removing capacity of the Whirlybird and copies of their report showing its remarkable performance are available on request. CSIR tests have proven that the Whirlybird extracts high volumes of air. Many thousands of Southern African users attest to the benefits produced by the Whirlybird.

Range of sizes and colours
The Whirlybird is available in two sizes: the standard size has a 300mm-diameter neck and the larger one, a 350mm-diameter neck. Whirlybirds have a standard milled aluminium finish, but can be colour coated upon request.