Circular Filters - with Spigot and Cowl

Rainbow Filters design and manufacture a range of Standard Circular Filters for your requirements, as listed below. These solidly constructed circular filters can also be supplied with a variety of weatherproof cowls for both top and side mounting. Mounting Flanges when required are made from 3mm or 5mm flat steel, depending on the size of the filter. The spigot “if required” is made from 3mm x 50mm flat bar.