Range Vent Duct Size

Over the range microwave ducting information duct installation guidelines.

Range vent duct size. Minimum duct size of 7 recommended duct size of 8 10 901 1200 cfm. I m putting in a kitchen exhaust hood that is 480 cfm with a 6 round duct connection. All over the range spacemaker microwaves can be vented to the outside using an equivalent total of 140 feet of rigid 3 1 4 x 10 rectangular or rigid 6 round ducting. The minimum duct sizes and recommended duct sizes based on a hood fan s cfm rating are as follows.

Here is a breakdown of the duct size you need based on your range hood s cfm. If your hood is between 401 and 600 cfm you need a minimum duct size of 6. A 0 to 400 cfm fan requires a 4 inch minimum duct size but a 6 inch duct is recommended. Duct size for vent hood.

The minimum recommended duct size is 6 for 0 400 cfm range hoods. For more information on duct size click here. Hood range duct size. I am an hvac designer but this is a question about an installation i am doing in my own house.

If your hood is between 601 and 900 cfm you need a minimum duct size of 7. The smaller the duct size the less cfm you need and the larger the duct size the more cfm you need. Comments 0 can i use 4 inch round ducting to vent a 24 inch range. Duct system sizes and airflow quick chart created date.

If you have a range hood with a cfm of 0 400 you will need a minimum duct size of 4. My duct sizer tells me that would require a 10 5 duct. The range will have a 24 inch hood that will be connected to an inline exhaust fan rated at 140 cfm which will run through the ceiling joist for about 10 feet.