Rectorseal 1500-12 Lay-in T-bar Perforated Supply Diffuser

Product Description

The RECTORSEAL 1500-12 is a perforated lay-in supply air diffuser designed for installation in standard 2-foot by 2-foot suspended T-bar ceiling grids with a 12-inch round duct connection. The perforated face panel delivers multi-directional airflow distribution, promoting balanced conditioned air delivery across the occupied zone. An integrated opposed blade damper allows manual air volume adjustment without removing the unit from the grid. Constructed of steel with a white painted finish, this diffuser is suited for interior HVAC applications in residential and light commercial environments. Licensed HVAC technicians and sheet metal contractors are the typical installers.

This diffuser is commonly used in office spaces, retail areas, classrooms, medical offices, and similar light commercial or residential settings where a standard 2-foot by 2-foot T-bar ceiling system is already in place. The 12-inch round collar connects directly to round supply ductwork, making it a practical choice for new construction and retrofit projects where the existing duct layout uses 12-inch round trunk or branch lines. Proper sizing of the duct system to match the diffuser neck diameter is essential for achieving design airflow and minimizing noise.

Key Features

• Perforated face panel provides multi-directional airflow for even supply air distribution
• Integrated opposed blade damper enables manual air volume adjustment at the diffuser
• Fits standard 2-foot by 2-foot suspended T-bar ceiling grid without modification
• 12-inch round duct collar connects directly to round supply ductwork
• Steel construction with white painted finish for a clean interior appearance

Compatibility

Designed as an OEM-style replacement or new-installation supply diffuser for standard 2-foot by 2-foot suspended T-bar ceiling grid systems using 12-inch round duct connections in residential and light commercial HVAC applications.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Shut off the air handling unit and isolate the supply circuit before connecting ductwork or placing the diffuser in the grid. The lay-in panel drops into the T-bar grid from below — verify the grid opening dimensions match before installation. Secure the duct connection at the collar with approved fasteners and seal all joints per local mechanical code requirements to prevent air leakage.

Technical Specifications

• Face Dimensions: 2 feet by 2 feet (fits standard T-bar grid)
• Duct Connection Size: 12 inches round
• Airflow Pattern: Multi-directional perforated
• Damper Type: Integrated opposed blade, manually adjustable
• Material: Steel
• Finish: White painted
• Application: Residential and light commercial interior HVAC

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: 1500-12