The product selector helps understanding part number structure. It also allows customers to build specific part numbers that cannot be found in the selection table. Such part numbers can be requested from distributors or the local Schaffner office. Here are some examples: FN9280-4-06: 4 A single stage model, Faston terminals, and comes with Flange Mount Kit. The FN9281-4-06: Same as previous example but with a vertical rear mount flange fitted at factory. This is an example of a filter option which is not offered as standard but can be requested. The FN9280E-2-100: 2 A single stage model with Earth Line Choke, Spring cage terminals, and comes with Flange Mount Kit. The FN9290B-10-06: 10 A dual stage model Medical grade, Faston terminals, and comes with Flange Mount Kit. The FN9280EB-6-100: 6 A single stage model Medical grade with Earth Line Choke, spring cage terminals, and comes with Flange Mount Kit. The FN9289-1-06: 1 A single stage model, Faston terminals, snap fit for panel thickness 1 mm to 2.5 mm. The FN9289-1-06-30: Same as previous, snap fit but for panel thickness 2.6 mm to 3.5 mm. The FN9288-1-06: Identical to previous filters except the fitting wings are located on the sides of the filter instead of usual top and bottom. The last two examples are also options which are not offered as standard but can be requested.