Flexible Cold Air Return Duct

Diameter of duct x 3 14 return air duct in square inches.

Flexible cold air return duct.

Menards offers a wide range of ductwork pipe and fittings to help your ductwork systems run efficiently these products are used for warm air return supply and exhaust systems. Therefore your return air duct and grill size will be 24 by 24 inches tip. In addition its flexibility allows for easier installation in hard to reach areas. Item 1790033 model 1790033.

For instance a 2 5 ton system approximately 400 cfm per ton would require 2 14 flexible return ducts or 1 very short flexible 18 duct to move the 1000 cfm required by the 2 5 ton system. Use non insulated flexible ducting to connect the two returns image 4. But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b. Cut two holes one in the stud cavity and the other one into the existing return image 2.

These ductwork tips will help balance your air conditioning and heating system. Product is knocked down for shipping and must be. 4 ton unit x 144 square inches 576 squared. Nail a piece of sheet metal onto the back of a stud cavity.

Can accept any size collar up to 18 in. Return air ducting is necessary in almost every room. Flexible duct can be installed in place of galvanized pipe in many applications if allowed by your local hvac codes. First building codes in many areas require that the cold air return line gets external insulation and therefore you will need to leave a gap for the insulation around the duct return line.

Used as a central return vent box filter grill not included. Have to get the air back to the furnace. Running a metal cold air return duct between studs requires knowledge of both hvac systems and the components involved in framing. Can be easily cut to size.

The duct board return air box is an r6 the duct board return air box is an r6 insulated box that installs traditionally in a ceiling. Sometimes the best route for a flexible duct run is up and over an obstruction. Most technicians are skeptical about these numbers especially on the return air side of the system. That would then reduce the flow of conditioned air to that space.

To prevent problems use saddles or straps to support at regular intervals 4c 4d follow the manufacturer s instructions but in case they get lost here is a list of best practices for. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. The square root of 576 is 24.