Debris separator for downspouts

For use in a gutter system having a downspout, a debris separator comprising:

• a tubular housing having a top opening, a central housing portion defining an expanded chamber beneath said top opening, said chamber being larger than said top opening in at least one lateral direction, said chamber being aligned under said top opening so as to provide unobstructed fluid communication between said opening and said chamber;
• a transverse opening in said central portion adjacent said laterally expanded chamber portion, said transverse opening having a bottom peripheral edge,
• said central housing portion having a flange extending inwardly into said chamber on a side of said central housing portion opposite from said transverse opening, said flange being spaced upwardly from said bottom peripheral edge,
• a lower housing portion having a housing wall inclined downwardly from said edge of said transverse opening and
• a grate having a rear frame member, a front frame member and a plurality of plates extending between said frame members, said grate being removably insertable into said chamber through said tranverse opening to an operating position in which said rear frame member abuts against said flange and said front frame member being formed with a leading edge which abuts against said bottom peripheral edge, said leading edge including means to snap over said bottom peripheral edge, said grate being dimensioned so that, upon insertion of said grate to said operating position, said grate is frictionally locked to said housing between said flange and said bottom peripheral edge.