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Flex Duct, Boots, Collars & Grilles

Connecting Flex To A Collar

Inner liner not banded, insulation gap, kinked

Yellow / Check First1stBatch 5

What This Helps With

Inner liner not banded, insulation gap, kinked

Apprentice words: flex to collar

Trade terms: flex connection, draw band, clamp, inner/outer

Check First

Inner core banded/sealed, insulation pulled over, outer banded

What Not To Do

Leave inner core loose

What can go wrong: Banding only the outer jacket

Better Foreman Question

Two-band this collar (inner and outer), right?

Open In Ask Foreman

Verify With

Reference type: manufacturer install instructions

Source to verify: Flex maker instructions; UL 181 marking

Safe wording: Two-band/seal per flex maker; note UL 181 listing.

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