Foil Faced Lamella

Chilled and dual-purpose ducts

BS5422:2009 (table 14) - Control Heat Transfer

Whilst it is impossible to account for all scenarios, the following act as general guides:

50mm thick

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These thicknesses may not satisfy all criteria and design requirements.

Warm air ducts

BS5422:2009 (table 13) - Control Heat Loss

Whilst it is impossible to account for all scenarios, the following act as general guides:

Within Building 40mm thick, Plant rooms & external locations 50mm thick

​

These thicknesses may not satisfy all criteria and design requirements.

Chilled air in ambient conditions

BS5422:2009 (table 12) - Condensation Control

Whilst it is impossible to account for all scenarios, the following act as general guides:

Within Building 40mm thick, Plant rooms & external locations 50mm thick

(min air inside duct 15 degC)

These thicknesses may not satisfy all criteria and design requirements.