1. The canvas flexible connectors are used for the connection between equipment and ducts or components; while the flexible soft ducts are designed for flexible installations where rigid ducts are not feasible, belonging to the ventilation duct system.

2. Fixed methods differ: Canvas flexible connections utilize flange connections and typically do not require dedicated support hangers; flexible flexible ducts use galvanized clip connectors and are fixed with hanging supports.

3. Length Variations: Canvas flexible connectors typically have lengths ranging from 150-250mm as per standard drawings; flexible air ducts usually measure around 0.5-2.5 meters.

4. Material Differences: The canvas flexible connection定额 uses canvas; the flexible air duct is made of materials such as metal, coated fiber fabric, polyester, polyethylene, polyvinyl chloride film, aluminum foil, etc.

5. Different定额 contents: Canvas flexible connectors are made and installed on-site; flexible flexible ducts are installed using finished flexible hoses.

When applying the quota, note: For flexible soft ducts, if each length is less than 3 meters, the quota can be directly applied. If each length exceeds 3 meters, it can be calculated as 3 meters per piece, with any length under 3 meters rounded up to 3 meters.