Snappy 36-30 Start Collar 3.25x10 Inch Rectangular Duct

Product Description

The SNAPPY 36-30 is a rectangular start collar designed for use in sheet metal ductwork systems. A start collar serves as the fitting that connects a branch duct takeoff to the main trunk line, allowing conditioned air to be directed from the plenum or main duct into a branch run. This fitting measures 3.25 inches by 10 inches, matching a standard rectangular duct size commonly found in residential and light commercial forced-air HVAC installations. Installation is performed by licensed HVAC technicians or sheet metal mechanics during new construction or duct retrofit work.

This start collar is suited for rectangular duct branch connections in forced-air heating and cooling systems. It is typically installed where a branch duct originates from a main trunk or plenum box. The 3.25-inch by 10-inch profile corresponds to a common duct size used in residential supply air distribution. HVAC sheet metal contractors and duct installers will find this fitting appropriate for standard low-pressure supply or return air branch applications.

Key Features

• 3.25 inches by 10 inches rectangular profile fits standard duct sizing
• Start collar design provides a clean, secure branch connection point on trunk ducts or plenums
• Designed for use in low-pressure forced-air HVAC duct systems
• Compatible with standard rectangular sheet metal ductwork fabrication methods

Compatibility

Designed as an OEM-style replacement and new-installation fitting for standard 3.25-inch by 10-inch rectangular duct branch connections in residential and light commercial forced-air HVAC systems.

Installation Notes

Installation should be performed by a qualified HVAC technician or sheet metal mechanic. Shut down the air handling unit and confirm the system is de-energized before cutting into existing ductwork. The collar is typically secured with sheet metal screws and sealed with UL 181-rated mastic or foil tape in accordance with local mechanical codes and SMACNA standards. Do not overtighten fasteners on the duct wall, as this can distort the collar seating surface.

Technical Specifications

• Duct Size: 3.25 inches x 10 inches
• Fitting Type: Start Collar
• Duct Shape: Rectangular

Standard Information

• Brand: SNAPPY
• Manufacturer Part Number: 36-30