Name: Wind-Driven Turbine Ventilator (Whirlybird)
Brand: ttkbuildingmaterials.com Product Index
Availability: InStock

WHAT IT IS

A wind-driven turbine ventilator (whirlybird) is a passive roof exhaust device used to remove hot air and moisture from industrial and commercial roof spaces in Malaysia. Wind pressure rotates the multi-vane turbine head, creating negative pressure that draws stale, humid air upward and out without electricity. Available in 8", 12", and 14" (203–355 mm) throat diameters in aluminium or galvanised steel construction. Output airflow ranges from 200 to 600 m³/h depending on wind speed. Commonly specified for factories, warehouses, and agricultural buildings across Malaysia. Installed through the roofing sheet with a profile-matched flashing base. Zero running cost; no electrical connection required.

UNIT OF MEASURE

UNIT (PRIMARY) PIECE

Typical pack size: Sold individually; throat diameter 8", 12", 14" (203 mm, 305 mm, 355 mm); aluminium or galvanised steel body; base flashing included

GRADE & SPECIFICATION

Wind-driven rotary turbine ventilator. No specific Malaysian MS standard. Typical specification: throat 12" (305 mm); aluminium or GI steel construction; 360° rotating head with 12–24 vanes; rated air extraction capacity ~200–600 m³/h depending on wind speed. Common brands in MY: Lomanco, Maxiaire, local fabrications.

CLASSIFICATION

UNSPSC 40101502

CIDB CATEGORY Roof ventilation (turbine ventilator — wind-driven)

UNSPSC codes are issued by the United Nations Global Marketplace (UNGM). CIDB categories are defined by Malaysia's Construction Industry Development Board. These codes are informational — use them to verify, not replace, procurement classification.

TARIFF & TAX — PDK 2025

HS CODE (AHTN) 8414594900

OFFICIAL DESCRIPTION Other

IMPORT DUTY (MFN) 20%

SST 10%

Sourced from PDK 2025 (Customs Duties Order 2025). The import duty shown is the MFN / general rate — preferential rates under FTAs (ATIGA, ACFTA, etc.) are typically lower or zero. SST per the PDK 2025 schedule (a value like 10%/0% means standard/exempt variants). Indicative only — confirm the applicable rate and tax treatment with your licensed customs/tax agent before relying on it. Spotted an error? hello@ttkbuildingmaterials.com