Starduct Ring Diffusers (for long throw) are made of 1.2mm aluminum alloy grade A6063-T5 and core/blade made of 1.0mm aluminum sheet . Frame and blades are linked by swivel pins allow the blades being adjustable and creating an up to 10m airflow. The frame is lengthen to create a "build-in air plenum" for flexible ducts of D150 ~ D350.

Powder coating finish in RAL9010 standard colors or optional color as requested with Jotun paint or equivalent, service life over 5 years

The radial OBD is made of steel sheet, black painted, adjustable by screw.

Production standards : Ashrea 70:2006. ASHRAE 70-2006 Standard “Method of Testing for Rating the Performance of Air Outlets and Inlets” ADC1062: GRD-84 “Test Code for Grilles, Registers and Diffusers”.

Scope of testing: A) Sound Power Level (NC) B) Air Volume versus Static Pressure C) Area Factor D) Throw Pattern (test report pending)