Rectorseal 404M8X8 4-way Ceiling Sidewall Damper 8x8

Product Description

The RECTORSEAL 404M8X8 is a steel supply air register designed for ceiling or sidewall installation in residential HVAC systems. Built for an 8-inch x 8-inch rectangular duct opening, it features a 4-way deflection pattern that distributes conditioned air in four directions for broader room coverage. An integrated multi-shutter opposed blade damper is mounted directly at the face, allowing manual airflow volume adjustment without additional hardware. Licensed HVAC technicians and service pros install this register as the terminal supply outlet in forced-air distribution systems where directional control and balancing are required at the face.

This register suits residential forced-air applications in both new construction and retrofit work. The 4-way air pattern makes it well suited for ceiling installations near the center of a room, where spreading airflow evenly across the space improves comfort and reduces hot and cold spots. Sidewall mounting is also supported, giving installers flexibility in duct outlet placement. The multi-shutter damper allows balancing at the register face without returning to the air handler or adjusting trunk dampers, making it practical for room-by-room airflow tuning in rectangular duct systems.

Key Features

• 4-way deflection pattern distributes supply air in four directions for improved room coverage
• Integrated multi-shutter opposed blade damper allows manual airflow volume adjustment at the face
• Fits an 8-inch x 8-inch rectangular duct opening
• Compatible with ceiling or sidewall installation configurations
• Steel construction for durability in residential forced-air systems

Compatibility

Designed as an OEM-style supply air register for residential forced-air HVAC systems using rectangular duct with an 8-inch x 8-inch duct opening.

Installation Notes

Installation is typically performed by a licensed HVAC technician as part of a supply air distribution system. Power down the air handling equipment before cutting into ductwork or securing the register to the ceiling or sidewall surface. Ensure the duct rough opening matches the 8-inch x 8-inch specification before securing the register to prevent air bypass around the frame. Adjust the multi-shutter damper after system startup to balance airflow to the space.

Technical Specifications

• Duct Opening Size: 8 inches x 8 inches
• Air Pattern: 4-Way
• Damper Type: Multi-Shutter Opposed Blade
• Damper Adjustment: Manual
• Installation Type: Ceiling or Sidewall
• Material: Steel
• Application: Residential HVAC Supply Air

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: 404M8X8