# Fabric Ducts vs Galvanized **URL:** \ **Category:** Materials\ **Created:** [October 9, 2025, 10:11pm UTC](https://community.carbonleadershipforum.org/t/fabric-ducts-vs-galvanized/9179 "2025-10-09T22:11:42Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![stan](https://avatars.discourse-cdn.com/v4/letter/s/51bf81/32.png) [@stan](https://community.carbonleadershipforum.org/u/stan)\ **Post date:** [October 9, 2025, 10:11pm UTC](https://community.carbonleadershipforum.org/t/fabric-ducts-vs-galvanized/9179/1 "2025-10-09T22:11:42Z")
Has anyone looked at embodied carbon of fabric vs galvanized duct. Im super new to EPD’s and a little confused. My understanding is that the EPD’s report per unit weight of product so its a bit tricky to compare 1kg of fabric vs 1kg of steel - I imagine fabric is many times lighter. Any guidance would be super helpful! ---
**Author:** ![Johanna\_Jarvinen](https://sea1.discourse-cdn.com/flex015/user_avatar/community.carbonleadershipforum.org/johanna_jarvinen/32/1567_2.png) [@Johanna\_Jarvinen](https://community.carbonleadershipforum.org/u/Johanna_Jarvinen)\ **Post date:** [October 10, 2025, 3:00pm UTC](https://community.carbonleadershipforum.org/t/fabric-ducts-vs-galvanized/9179/2 "2025-10-10T15:00:30Z")
> [@stan](#): > > ricky to compare 1kg of fabric vs 1k Hi EPDs can be also done by lenght (1 meter or imperial) and then the weight is declared. Different products use different declared units. ---
**Author:** ![mewoolsey](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@mewoolsey](https://community.carbonleadershipforum.org/u/mewoolsey)\ **Post date:** [October 14, 2025, 7:48pm UTC](https://community.carbonleadershipforum.org/t/fabric-ducts-vs-galvanized/9179/3 "2025-10-14T19:48:14Z")
To compare, I would look at a representative piece/ length of duct delivering an equivalent amount of air. Then use the EPD data to calculate the CO2e of the two types of duct. And to be fair, include the extra carbon of any diffusers needed to deliver the air into the space.