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2. Duct (flow) - Wikipedia

   en.wikipedia.org/wiki/Duct_(flow)

   Flexible duct is very convenient for attaching supply air outlets to the rigid ductwork. It is commonly attached with long zip ties or metal band claps. However, the pressure loss is higher than for most other types of ducts.

3. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   Flexible metallic conduit used in an underground parking facility. Flexible conduits are used to connect to motors or other devices where isolation from vibration is useful, or where an excessive number of fittings would be needed to use rigid connections. Electrical codes may restrict the length of a run of some types of flexible conduit.

4. Air sock - Wikipedia

   en.wikipedia.org/wiki/Air_sock

   Air socks are also easier to clean than rigid ducting because they can be dismounted and cleaned using a washing machine, whereas rigid ducting cannot be removed easily and is generally not as accessible for cleaning, requiring special tools and maneuvering for cleaning; this leads to the ducts not being cleaned, or being cleaned less often. [1 ...

5. Microducts - Wikipedia

   en.wikipedia.org/wiki/Microducts

   A common cable installation technique for fiber cables remains cable pulling. After the duct is placed, a high-strength pull line is blown into the duct (if one has not already been pre-installed by the duct manufacturer). The pull line is attached to one end of the cable and is used to pull the cable through the duct.

6. Ductwork airtightness - Wikipedia

   en.wikipedia.org/wiki/Ductwork_airtightness

   The ductwork airtightness level is the airflow rate through ductwork leakages divided by the ductwork area. It is recommended to test at least 10% and 10 m 2 of the duct surface including all duct types and a variety of sizes and components. The ductwork surface area is estimated according to EN 14239. [11]

7. Fixed Budget vs. Flexible Budget: What’s the Difference and ...

   www.aol.com/fixed-budget-vs-flexible-budget...

   A flexible budget allows you to enjoy the fruits of your labor by permitting you to increase your spending in certain categories, such as groceries, dining and entertainment, as your income increases.