FILTER SET

PROBLEM TO BE SOLVED: To make a filter set light in weight, shorten the work time of setting one, and lower the manufacturing cost by providing a filter set, particularly with respect to clamping/fixing means for fitting an air filter on a filter- receiving frame, which does not use the conventional welding and which prevents leakage securely. SOLUTION: The subject relates to a filter set designed for an air filter to be fitted in a filter-receiving frame 11 provided in a casing by using clamping/fixing means 30. For the clamping/fixing means 30 use is made of first and second bolts and a long nut 31, the long nut 31 having a first bolting groove 31A and a second bolting groove 31B into which the first bolt 32 and the second bolt 33 are fitted. By filling the first bolting groove 31A with a sealing material 35 and fitting in the first bolt 32 the long nut 31 is fixed to the filter-receiving frame 11; a filter presser is provided at one end of the second bolt 33; by fitting of the second bolt 33 into the second bolting groove 31B the air filter is fixed by clamping to the filter-receiving frame 11.