you can but unless they are burlap you wont want them close to the heat of the ducting.
Need more info?
Ernie and Erica
Wood burning stoves, Rocket Mass Heaters, DIY,
Stove plans, Boat plans, General permiculture information, Arts and crafts, Fire science, Find it at www.ernieanderica.info
You didn't ask if I was naked, you asked if I was decent. This is a decent, naked, tiny ad:
2024 Permaculture Adventure Bundle (now a special for october 2025)