How to Cut a Collar Into Duct Board

[@rsanchez5179]

Thank you for your video. I have a question. I read one time that I have to leave at least 12" between collars on the supply plenum box. But I have seen many plenum boxes with several outlets pretty close. What is your opinion on this?

[@ryanlabree6413]

Because this is rocket science

[@jorgenorman8715]

How do you take out a collar and patch it

[@ps3boss98]

Why are you only using tape and not mastic? Tape won’t do the job alone

[@happyamerica1240]

Really Helps Thank you 🙏

[@blackericdenice]

I thought I had to make that box.

[@DoctorWho369]

no more fiberglass/asbestos