Lomanco GT12 Turbine Ventilator 12 Inch Galvanized

Product Description

The LOMANCO GT12 is a 12-inch galvanized turbine ventilator with an integrated base, designed to provide passive attic ventilation through wind-driven rotation. Built from .025 stamped galvanized steel, the unit features permanently lubricated ball bearings that allow continuous operation with minimal maintenance. The internal brace design adds structural rigidity for long-term performance in varying weather conditions. This ventilator is installed by roofing contractors and general contractors on residential and light commercial structures where attic airflow is required to manage heat and moisture buildup.

The GT12 is suited for residential roofing applications where passive ventilation is preferred over powered exhaust. The base accommodates roof pitches up to 7/12, making it a practical fit for a wide range of standard residential roof profiles. It ships as a single unit and is typically installed at the ridge or upper field of the roof deck where hot air naturally accumulates. Roofers and HVAC technicians both encounter this unit during new construction and re-roofing projects.

Key Features

• 12-inch throat diameter for standard residential turbine ventilator applications
• .025 stamped galvanized steel construction for corrosion resistance
• Permanently lubricated ball bearings reduce maintenance requirements
• Fits any roof pitch up to 7/12 without additional adapter components
• Internal brace adds structural support and resists wind deformation
• Includes integrated base for a self-contained installation unit

Compatibility

Designed as an OEM-style replacement or new-installation turbine ventilator for residential and light commercial roofing applications requiring passive attic exhaust ventilation.

Installation Notes

Installation is typically performed by roofing contractors following local building code requirements for attic ventilation ratios. The roof deck opening should be cut to match the ventilator base dimensions before fastening. Flashing and sealant should be applied according to local weather exposure requirements to prevent water infiltration. Always follow manufacturer base flashing guidelines and applicable building codes for ventilation net free area calculations.

Technical Specifications

• Throat Diameter: 12 inches
• Material: .025 Stamped Galvanized Steel
• Bearing Type: Permanently Lubricated Ball Bearings
• Maximum Roof Pitch: 7/12
• Brace Type: Internal Brace
• Weight: 9 pounds
• Package Quantity: 1 EA

Standard Information

• Brand: LOMANCO
• Manufacturer Part Number: GT12