Aug 17, 2015 · Flex Duct CFM chart? Jump to Latest 18K views 8 replies 3 participants last post by beenthere Aug 22, 2015 digitalplumber Discussion starter

Feb 1, 2023 · The duct chart I looked at said 8" is good for 160cfm for flex or 180 for metal. Then there is the distance to contend with and any turns. Simple duct sizing plan for the largest …

A 14-inch flex duct can carry approximately 700 CFM. The accuracy of CFM values can depend on the compression used by the chart maker and the friction rate (FR). Using flex duct for …

Dec 31, 2009 · How do you determine the size of floor boots and registers? I am working through some heat pump and duct work installation issues. I want to see if the floor boots and registers …

Aug 20, 2022 · You can seal with mastec and get duct wrap insulation. You can use metal for trunk and flex for the branches. Re-read my posts - sizing ducts based on CFM per sq ft or air …

Aug 27, 2022 · What is the correct way to measure total external static pressure? I have read the return probe goes directly before the blower and supply probe directly after the blower. Had a …

Nov 21, 2022 · This will split into all flex duct with a 6 inch single run to the bathroom, and a 12 inch flex duct trunk from which (2) 8" vent supply pipes and a single 6" supply pipe at the end …

Feb 27, 2023 · Bathroom Exhaust Fan Duct Size (4-9 Inches, 50-250 CFM Chart) With a bathroom exhaust fan, you have to install adequately sized ducting. The problem is that there …

Sep 8, 2022 · What size and where would you place ceiling returns in this floor plan? We'll say return cfm is between 1700-2000. 5 ton ac with 100k btu gas furnace.

Feb 25, 2021 · Here is a photo but please ignore the flex duct sizing (I dont belive that a 6 in flex can provide 140 cfm). All ducting will be 8 in flex except the bathroom.