Spacepak 45ac-sm9-t Round Plenum Duct Tee

Product Description

The SPACEPAK 45ac-sm9-t is a round plenum duct tee designed for use in SpacePak-style high-velocity mini-duct HVAC distribution systems. This fitting connects the main plenum to branch supply runs, allowing conditioned air to be routed through small-diameter ducts typical of high-velocity systems. It incorporates a SmartSeal design intended to simplify and secure duct connections during installation. Weighing 7 pounds, the 45ac-sm9-t is a substantial, purpose-built fitting suited for installation by licensed HVAC technicians working with high-velocity air distribution systems in residential and light commercial applications.

This plenum tee is used in high-velocity forced-air systems where space constraints require small-diameter, flexible supply tubing branching off a central plenum. It is typically installed in attic spaces, crawl spaces, or mechanical rooms as part of a complete SpacePak-type distribution layout. The SmartSeal feature supports leak-resistant connections without the need for additional sealing tape or mastic in the connection zone, helping maintain system static pressure integrity throughout the distribution network.

Key Features

• Round plenum tee configuration for high-velocity mini-duct air distribution systems
• SmartSeal connection design for secure, leak-resistant branch connections
• Substantial 7-pound construction indicating durable, rigid fitting materials
• Designed to maintain static pressure integrity in high-velocity duct systems
• Suited for residential and light commercial high-velocity HVAC installations

Compatibility

Designed as an OEM-style replacement or new-installation fitting for high-velocity round plenum duct systems requiring a tee branch outlet configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with high-velocity air distribution systems. Shut down and de-energize the air handling unit before working on the plenum or any duct connections. Follow the system manufacturer's guidelines for plenum tee placement and branch spacing to maintain balanced airflow. Verify all connections are fully seated and secured per the SmartSeal design requirements before restoring system operation.

Technical Specifications

• Product Type: Round Plenum Duct Tee
• Weight: 7 pounds
• Shipping Weight: 6.90 pounds
• Shipping Width: 20.20 inches
• Shipping Length: 20.30 inches
• Shipping Height: 10.60 inches

Standard Information

• Brand: SPACEPAK
• Manufacturer Part Number: 45ac-sm9-t