Imperial ductwork and ventilation parts are for homeowners and light commercial buyers repairing or renovating heating and cooling systems. Its galvanized pipe, elbows, connectors and register boots cover the straight runs, turns and connections that make up a duct repair.
Imperial Manufacturing Group makes heating, ventilation and building products. Normand Caissie founded the company in 1979, and its corporate head office is in Richibucto, New Brunswick. It manufactures metal and plastic products for heating, air conditioning and ventilation in homes and commercial buildings.
Heating, cooling and ventilation
Imperial covers ductwork as well as stove and fireplace care. It manufactures galvanized duct, pipe, connectors and fittings for installing, renovating and repairing heating and cooling systems. Choose the line by what you’re moving through it: galvanized round pipe distributes warm and cold air, while Imperial offers a separate dryer-venting line for dryer exhaust projects.
Imperial also offers insulated and non-insulated flexible duct; choose the type that fits the insulation requirements of the run. Its products include sidewall grilles.
Galvanized pipe and fittings
Imperial’s round galvanized range includes elbows, transitions, connectors and register boots. An elbow changes direction; a transition handles a change in size or shape. Sketch the run first so each fitting has a clear job. For a register boot, measure both the duct connection and the register opening.
Diameter is only part of fitting an elbow into an existing run. You also need room for the turn and the next connection. Dry-fit the elbow and adjoining pipe before fastening the run so each joint lands where it needs to.
Imperial round pipe uses a snap-lock closure. Close the seam along its full length during assembly, then check that the lock is fully engaged before fitting the pipe into the run.
Gauge matters alongside diameter: a lower gauge number means thicker metal. Match both to the ductwork requirements. When choosing a pipe length, account for how the adjoining pieces connect; measure the required piece with those connections included.
Stove and fireplace care
Imperial offers stove-and-fireplace cleaning and maintenance products, including chimney brushes, rods and accessories.
Round pipe specifications
These six-inch round-pipe examples show the available gauge differences; Imperial also offers six-inch round pipe in a 12-inch length.
| Model | Diameter | Length | Gauge |
|---|---|---|---|
| GV0388 | 6 inches | 60 inches | 30 |
| GV0387 | 6 inches | 60 inches | 28 |
| GV0380 | 6 inches | 24 inches | 26 |
| GV1767-A | 6 inches | 60 inches | 24 |
Frequently Asked Questions
How do you measure for an Imperial grille?
Measure the duct opening you’re covering, not just the outside edges of the old grille. The face overlaps the opening, so its outside dimensions can send you home with the wrong size. Check the screw locations too if you’re reusing existing mounting holes.
What is Imperial galvanized pipe used for?
Imperial galvanized round pipe distributes warm and cold air in heating and cooling systems. That use doesn’t establish suitability for stove exhaust or dryer exhaust; those jobs need pipe intended for that service.
What gauges does Imperial round pipe come in?
Imperial round pipe comes in 30, 28, 26 and 24 gauge. Lower numbers mean thicker metal, so two pieces with the same diameter and length can still differ in thickness. You need the gauge required for your ductwork as well as the right fit.
How does Imperial snap-lock pipe go together?
Imperial round pipe has a snap-lock closure along its length. Engage the seam fully from end to end before connecting the pipe to the next piece. A seam that’s caught at both ends can still have an open section in the middle.
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