Slotted Channel Light Gauge, 41mm x 21mm x 1.5mm, 3m Anti Vibration Mounts they effectively reduce airborne noise

they effectively reduce airborne noise while maintaining efficient airflow

Efficient Design: Features an efficient backward curved impeller and external rotor motor for compact design

Spiral is large end (female) and requires small end (male) connection pieces to fit two pieces of spiral together

DFK1: 25 self-drill screws

Slotted Channel Light Gauge, 41mm x 21mm x 1.5mm, 3m Anti Vibration Mounts they effectively reduce airborne noiseDesigned as support systems for mechanical, electrical, and plumbing installations Attached directly into walls, existing steelwork, concrete inserts, ceilings, and floors Easily assembled and reconfigured using brackets, nuts, and bolts Holes to facilitate interconnection or fastening to underlying building structures Unistrut compatible