Description
The Lau 02694111 (Model DD11-10A) is a precision-engineered concave blower wheel designed for direct drive air-handling applications. Built to deliver reliable, consistent airflow in residential and commercial HVAC systems, this double inlet wheel draws air from both sides of the housing to maximize volumetric efficiency while keeping noise levels low. Its concave blade profile is optimized for forward-curved performance, making it a dependable choice for fan coil units, air handlers, and other forced-air equipment.
Key Specifications
- Diameter: 11-3/4″
- Width: 10-5/8″
- Bore: 1/2″
- Maximum RPM: 1,550
- Rotation: Clockwise (CW)
- Blade Style: Concave
- Inlet Type: Double Inlet (DWDI)
- Drive Type: Direct Drive
- Model: DD11-10A
- SKU: 02694111
Features & Benefits
- Double inlet design maximizes airflow efficiency by drawing air from both sides simultaneously
- Concave blade geometry delivers smooth, quiet operation ideal for occupied spaces
- Direct drive configuration eliminates belt and pulley maintenance requirements
- 1/2″ bore provides a secure, precise fit on standard direct drive motor shafts
- Rated up to 1,550 RPM for dependable performance within design parameters
- Clockwise rotation (as viewed from drive side) — verify rotation before installation
- Durable construction engineered to Lau’s exacting quality standards
Applications
- Fan coil units
- Air handlers and air handling units (AHUs)
- Residential and light commercial forced-air systems
- OEM blower assemblies requiring direct drive wheel replacement
Installation Notes
Always confirm rotation direction and bore size against the existing motor shaft before installation. The 1/2″ bore is designed for direct coupling to the motor shaft — no belt, sheave, or pulley is required. Ensure the replacement wheel matches the original equipment specifications for diameter, width, and rotation to maintain proper system airflow and efficiency.
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