If your question is about the air ducts, why not use the correct material for the job, rather than silicone caulk. Duct sealant is, literally, made for the job. It also costs less, on a quick look.
If your question is about the air ducts, why not use the correct material for the job, rather than silicone caulk. Duct sealant is, literally, made for the job.
If your question is about the air ducts, why not use the correct material for the job, rather than silicone caulk. Duct sealant is, literally, made for the job. It also costs less, on a quick look.