Lomanco 812100M Mill Flush Louver 8x12 Attic Vent

Product Description

The LOMANCO 812100M is an 8-inch by 12-inch mill finish flush-type louver designed for exhaust attic ventilation in residential construction. Built from heavy-duty aluminum, this louver handles weather exposure without corrosion. The flush mounting profile keeps the installation low-profile against the exterior wall or soffit surface. A 1.5-inch wide mounting flange simplifies fastening to standard framing. The unit ventilates up to 76 square feet and includes a built-in weather protection feature to limit wind-driven rain and debris intrusion. An attached 8-inch by 8-inch insect screen is integrated into the frame, eliminating the need for a separate screen installation.

The 812100M is intended for exhaust attic ventilation applications in residential structures. It is surface-mounted on gable ends, sidewalls, or similar locations where passive exhaust airflow is needed. The overall installed footprint is 11 inches by 15 inches. This louver must be used in combination with intake vents to establish proper balanced attic airflow. It is a common component in gable ventilation systems installed by roofing contractors, general contractors, and HVAC technicians managing attic thermal loads.

Key Features

• Heavy-duty aluminum construction resists corrosion for long-term exterior exposure
• Ventilates up to 76 square feet of attic space
• 1.5-inch wide mounting flange for secure attachment to framing
• Attached 8-inch by 8-inch screen provides integrated insect protection
• Built-in weather protection limits rain and debris intrusion
• Flush-type profile keeps installation tight to the mounting surface

Compatibility

Designed as an OEM-style exhaust louver for residential attic ventilation systems. Must be paired with compatible intake vents to achieve balanced ventilation airflow.

Installation Notes

Installation is typically performed by roofing contractors or general construction trades. Cut the opening to match the 8-inch by 12-inch louver dimension and fasten through the 1.5-inch mounting flange into solid framing or sheathing using appropriate exterior fasteners. Seal the perimeter with a compatible exterior caulk to prevent moisture intrusion. This louver is for exhaust only and requires intake vents to function correctly — do not install without a corresponding intake ventilation path.

Technical Specifications

• Louver Opening Size: 8 inches x 12 inches
• Overall Size: 11 inches x 15 inches
• Ventilation Coverage: 76 square feet
• Mounting Flange Width: 1.5 inches
• Attached Screen Size: 8 inches x 8 inches
• Material: Aluminum
• Finish: Mill
• Weight: 4 pounds
• Unit of Measure: EA
• Package Quantity: 6

Standard Information

• Brand: LOMANCO
• Manufacturer Part Number: 812100M