Rectangular & TDC · Taps, Branches & Fittings
Round spin-in with volume damper
Round branch — Branch off rectangular main
ConnectionSpin-in collar with tabs/screws
SupportIndependent branch support
How to install it
- 1
Lay out opening
- 2
hold cookie
- 3
cut/deburr
- 4
insert spin-in
- 5
rotate tabs or fasten flange
- 6
square collar
- 7
seal perimeter
- 8
install damper hardware
- 9
connect branch.
Quality check
- Collar tight
- damper works
- handle accessible
- no raw edges
Stop and verify
Stop if opening oversized or spin-in will not sit flat