Spigot plate adaptors allow for the creation of a spigot connection onto a normal flat surfacewhether it is horizonal, verticle or angled. These adaptors can be secured by screw, rivet or nut and bolts onto any flat surface. They have a flat square backing with a round spigot for connection to flexible ducting or rigid spiral ducting . (A flat round backed flange - Take off version is availble here ).
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