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Kitchen Extract Sizing (DW/172)

Commercial kitchen canopy extract rate by hood face velocity and duty category, with overhang, grease-duct velocity and makeup-air checks per DW/172.

Canopy

mm

Plan length along the cook line

mm

Plan depth, front to back

Appliance line

mm
mm

Duty & duct

e.g. Deep fat fryers, bratt pans, solid/open-top ranges, griddles

mm

Proposed circular duct, for the grease-entrainment velocity check

Enter the canopy length and depth (> 0)
ensign.software · 28 October 2026The Ensign Toolbox