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8-Inch-Wide Duct Caps

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IMPERIAL 12-in x 8-in Galvanized steel Rectangular Duct End Cap

IMPERIAL 

12-in x 8-in Galvanized steel Rectangular Duct End Cap

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4.9
8
IMPERIAL 16-in x 8-in Galvanized steel Rectangular Duct End Cap

IMPERIAL 

16-in x 8-in Galvanized steel Rectangular Duct End Cap

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5.0
7
Selkirk Corp 243805 Horizontal Termination Stove Pipe Cap 3 Inch Stainless Steel

Selkirk 

Corp 243805 Horizontal Termination Stove Pipe Cap 3 Inch Stainless Steel

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11-in x 11-in Galvanized steel 6-in Dia Rain Cap

IMPERIAL   11-in x 11-in Galvanized steel 6-in Dia Rain Cap

Designed for rooftop venting, this Imperial 6-in Rain Cap is used to cap pipe that extends through the roof. The vent cap helps control back drafts and prevents rain, snow and debris from entering your flue. It is easy to install with sheet metal screws for a secure fit (screws sold separately). The sturdy rain cap is constructed from 30-gauge galvanized steel for rust resistance and long-lasting durability.

Galvanized steel 4-in Dia Round Duct End Cap

IMPERIAL   Galvanized steel 4-in Dia Round Duct End Cap

This sturdy Imperial 4-in Crimped Round End Cap is designed to terminate the non-crimped end of a round pipe run. The crimped end cap installs easily with sheet metal screws for a secure fit (screws sold separately). Suitable for most heating, venting and air conditioning applications, the end cap is made from 30-gauge galvanized steel for rust resistance and long-lasting durability.

6.625-in x 6.625-in Aluminum 5.0-in Dia Rain Cap

Master Flow   6.625-in x 6.625-in Aluminum 5.0-in Dia Rain Cap

Master Flow UL-listed adjustable versa caps have a non-clogging positive draft design, recommended for flue, hot stack, or B-vent installations.

9.5-in x 9.5-in Aluminum 7.0-in Dia Rain Cap

Master Flow   9.5-in x 9.5-in Aluminum 7.0-in Dia Rain Cap

Master Flow UL-listed adjustable versa caps have a non-clogging positive draft design, recommended for flue, hot stack, or B-vent installations.

13.25-in x 13.25-in Galvanized steel 8-in Dia Rain Cap

IMPERIAL   13.25-in x 13.25-in Galvanized steel 8-in Dia Rain Cap

Designed for rooftop venting, this Imperial 8-in Rain Cap is used to cap pipe that extends through the roof. The vent cap helps control back drafts and prevents rain, snow and debris from entering your flue. It is easy to install with sheet metal screws for a secure fit (screws sold separately). The sturdy rain cap is constructed from 30-gauge galvanized steel for rust resistance and long-lasting durability.

10-in x 3.25-in Galvanized steel Rectangular Stack Duct End Cap

IMPERIAL   10-in x 3.25-in Galvanized steel Rectangular Stack Duct End Cap

Effectively terminate a rectangular stack duct run with this Imperial Rectangular Stack Duct End Cap. The 3-1/4-in x 10-in duct cap is used to block off a rectangular stack duct run within an HVAC system. A versatile tool, this end cap can be used to create a straight-line transition between round pipe, or a transition between an insulated flexible duct and regular stack duct.. Built to last, this blind end cap is constructed from 30-gauge galvanized steel for rust resistance and durability. The end cap is easy to install with sheet metal screws for a secure fit (screws sold separately). It is suitable for use in most heating, venting and air conditioning applications.

Galvanized steel 5.0-in Dia Round Duct End Cap

IMPERIAL   Galvanized steel 5.0-in Dia Round Duct End Cap

This sturdy Imperial 5-in Crimped Round End Cap is designed to terminate the non-crimped end of a round pipe run. The crimped end cap installs easily with sheet metal screws for a secure fit (screws sold separately). Suitable for most heating, venting and air conditioning applications, the end cap is made from 30-gauge galvanized steel for rust resistance and long-lasting durability.

11.625-in x 11.625-in Aluminum 9.0-in Dia Rain Cap

Master Flow   11.625-in x 11.625-in Aluminum 9.0-in Dia Rain Cap

Master Flow UL-listed adjustable versa caps have a non-clogging positive draft design, recommended for flue, hot stack, or B-vent installations.

9-in x 9-in Galvanized steel 4-in Dia Rain Cap

IMPERIAL   9-in x 9-in Galvanized steel 4-in Dia Rain Cap

Designed for rooftop venting, this Imperial 4-in Rain Cap is used to cap pipe that extends through the roof. The vent cap helps control back drafts and prevents rain, snow and debris from entering your flue. It is easy to install with sheet metal screws for a secure fit (screws sold separately). The sturdy rain cap is constructed from 30-gauge galvanized steel for rust resistance and long-lasting durability.

6-in x 4-in Galvanized steel 4.0-in Dia Rain Cap

American Metal Products   6-in x 4-in Galvanized steel 4.0-in Dia Rain Cap

Selkirk oval type B gas vent pipe and fittings for residential, commercial and industrial applications.

12.25-in x 12.25-in Galvanized steel 7-in Dia Rain Cap

IMPERIAL   12.25-in x 12.25-in Galvanized steel 7-in Dia Rain Cap

Designed for rooftop venting, this Imperial 7-in Rain Cap is used to cap pipe that extends through the roof. The vent cap helps control back drafts and prevents rain, snow and debris from entering your flue. It is easy to install with sheet metal screws for a secure fit (screws sold separately). The sturdy rain cap is constructed from 30-gauge galvanized steel for rust resistance and long-lasting durability.

Protect Your Ductwork with Duct End Caps from Lowe’s


Ductwork serves a very real purpose in homes. Without it, the warm or cool air in the home that keeps you comfortable year-round wouldn’t circulate properly. Ductwork helps to prolong the life of your HVAC equipment by reducing the strain on the system.


As part of the HVAC ductwork, duct end caps and round end caps play an important role. They’re all used to terminate round or square ductwork and are barriers that help prevent the flow of air and other materials from escaping the duct. Each duct cap helps prevent moisture and dirt from entering ductwork. The type of cap used depends on the shape of the duct.


A round end cap, also known as round duct cap, is a round piece of sheet metal. It’s commonly used in residential HVAC systems and is typically made from galvanized steel for durability or aluminum. A round end cap is placed at the end of round ductwork. Some end caps, such as blind end caps, are designed to terminate rectangular ductwork.


When it comes to your HVAC system, Lowe’s has a selection of duct caps in a variety of diameters.

   
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