Insulated Flexible Duct ALSD-L for HVAC and Acoustic Attenuation

ALSD-L

Insulated Flexible Duct ALSD-L

The ALSD-L flexible duct is a thermally and acoustically insulated ventilation channel designed to protect air in installations from cooling. Thanks to its perforation, it also functions as an effective sound attenuator, making it ideal for use in supply air plenums, valves, and recuperation systems.

Key Features

Thermal and Acoustic Insulation: Protects air from cooling and attenuates noise.
Construction: Based on Aluduct, with 25 or 50 mm insulation and an aluminum-polyester jacket.
Temperature Range: From -30°C to +140°C.
Flexibility: Winding diameter approx. 0.75 x outer diameter.
Packaging: 10m sections, compressed to 1200mm, packed in cardboard boxes.
Fire Classification: 2839.2/11/Z00NP.
Material: AW-1050A H24 aluminum sheet.

Technical Data

Ød nominal [mm]	Ød outer [mm]	Allowable pressure [Pa]	Tolerance [mm]
80	82.0	2000	+ 1.5
100	102.0	2000	+ 1.5
125	127.0	2000	+ 1.5
140	140.0	2000	+ 1.5
150	152.0	2000	+ 1.5
160	160.0	2000	+ 2.0
180	180.0	2000	+ 2.0
200	203.0	2000	+ 2.0
225	229.0	2000	+ 2.0
250	254.0	2000	+ 3.0
280	280.0	2000	+ 3.0
300	305.0	2000	+ 3.0
315	315.0	2000	+ 3.0
355	355.0	2000	+ 3.0
400	406.0	2000	+ 3.0
450	457.0	2000	+ 3.0
500	508.0	2000	+ 3.0
560	568.0	2500	+ 4.0
630	638.0	2500	+ 4.0
710	718.0	2500	+ 4.0
800	810.0	2500	+ 4.0