Description

The IMPERIAL MFG GROUP USA INC GV1361 is a 24-gauge galvanized steel taper increaser designed to transition round duct from a 7-inch diameter to an 8-inch diameter in forced-air HVAC duct systems. The large end is crimped for straightforward slip-fit connection into the downstream duct section. Fabricated from 24 GA galvanized steel, this fitting provides corrosion resistance suited to both supply and return trunk-line applications. HVAC installers and sheet metal contractors use taper increasers like this one when stepping up duct diameter to manage static pressure and airflow velocity across a duct run.

This fitting is used in residential and light commercial forced-air systems where a smooth, tapered transition from a smaller to a larger round duct diameter is required. Typical applications include main trunk-to-branch transitions, air handler discharge connections, and inline duct extensions where increasing duct size reduces system static pressure. The crimped large end seats into standard round duct without additional modification. Sold in a package quantity of 12 units.

Key Features

Tapered increaser transitions 7-inch round duct to 8-inch round duct
Fabricated from 24 GA galvanized steel for corrosion resistance
Large end crimped for slip-fit installation into downstream duct
Consistent gauge and profile supports proper static pressure management
Packaged 12 units per case for commercial and wholesale ordering

Compatibility

Designed as an OEM-style galvanized duct fitting compatible with standard 7-inch and 8-inch round duct systems in residential and light commercial forced-air HVAC applications.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal contractors. Power down and lock out the air handling unit before connecting or disconnecting duct fittings. Secure the fitting with sheet metal screws and seal all joints with UL-listed duct tape or mastic sealant in accordance with local mechanical codes and SMACNA standards. Do not use this fitting to reduce airflow direction against system design without consulting duct design calculations.