Layout & Coordination · Insulation allowance
Lay out true outside dimensions
Square Duct Installation — Externally insulated duct
Task typeInsulation allowance
Tools / equipmentInsulation spec, tape
How to install it
- 1
Add insulation thickness and jacket/support shield to duct dimensions when checking clearance.
Quality check
- No hidden clash after insulation
Stop and verify
Stop if insulation thickness is unknown