Iris dampers for circular ducts are small and effective

In sizes from 100 to 800 mm, ABB’s Iris duct dampers are available in the UK from all branches of CCL Veloduct.
Grenfell is the building industry's Piper Alpha says CIBSE
The recent passage of the Building Safety Act is a welcome recognition of the fact that making safe buildings is a highly skilled operation says the Chartered Institution of Building Services Engineers, endorsing the need for more effective regulation and a profound change in culture.
Underlying project-starts uptick indicates gradual recovery, Glenigan data suggests
Glenigan has released the June 2022 edition of its Construction Review.