The 3 in. x 8 ft. Semi-Rigid Aluminum Duct is ideal for bathroom fan venting. This duct is totally noncombustible. It has a maximum operating temperature of 435 degree F.

• Maximum durability for robust installation
• All aluminum products are fire resistant
• Semi-rigid product holds its shape to help improve airflow
• 3 in. Dia and stretches to 8 ft. L

The Master Flow 8 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 6 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 6 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 8 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The 6 in. x 8 ft. Semi-Rigid Aluminum Duct is ideal for bathroom fan and kitchen range hood exhausting. This duct is totally noncombustible. It has a maximum operating temperature of 435 degree F.

• Aluminum is flexible to allow for ease of installation
• All aluminum products are fire resistant
• Semi-rigid product holds its shape to help improve airflow
• 6 in. of diameter and stretches to 8 ft. L

The Master Flow 10 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 7 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 14 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance verse non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 5 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance verse non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 4 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 4 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 18 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• R6 fiberglass insulation for greater insulating power
• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance verse non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

This 6 in. x 25 ft. flexible aluminum foil duct is ideal for bathroom fan exhausting and other general-purpose exhaust applications. 3-layers of aluminum foil laminate are included in its composition that will withstand up to 250 degree F temperatures. This product has been rated as an air duct connector under UL 181.

• Made from 3 ply aluminum foil laminate
• Maximum operating temperature is 250 degree F
• UL 181 class 1-flexible aluminum foil air duct connector
• 25 ft. L offers plenty of ducts to complete your installation

The Master Flow 10 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 16 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• R8 fiberglass insulation for greater insulating power
• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance verse non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200° F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 9 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance verse non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

This 4 in. x 25 ft. flexible aluminum foil duct is ideal for bathroom fan exhausting and other general-purpose exhaust applications. 3 layers of aluminum foil laminate are included in its composition that will withstand up to 250 degree F temperatures. This product has been rated as an air duct connector under UL 181 and should never be used for dryer venting purposes.

• Made from 3 ply aluminum foil laminate
• Maximum operating temperature of this product is 250 degree F
• Product should never be used for dryer venting applications
• Rated as a ul 181 class 1 flexible air duct connector

The Master Flow 5 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 20 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• R8 fiberglass insulation for greater insulating power
• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance verse non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 14 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 7 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

The Master Flow 9 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy-duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance verse non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)