Air Distribution · Concentric Boxes
Concentric box for rooftop unit drop
Concentric supply/return assembly — Ceiling below RTU
ConnectionSupply and return drops
SupportStructural support
How to install it
- 1
Coordinate roof openings
- 2
support box
- 3
connect separate supply/return drops
- 4
seal
- 5
install room-side assembly.
Quality check
- No crossed ducts, weather and air seals complete
Stop and verify
Stop if curb/opening layout does not match