Filter trap for a motor vehicle thermal device

A filter trap for a motor vehicle thermal device, said trap made of polymer material being of planar elongated shape, having a length and having two longitudinal edges extending along the length thereof connected by two lateral edges extending along a width thereof, said trap comprising:

• a first assembly tab extending in an extension of the trap along the length thereof, said first assembly tab being fixed to a first of the two lateral edges;
• a snap-coupling configured to block said trap in a direction perpendicular to the plane of the trap, said snap-coupling being fixed to a first of the two longitudinal edges and being located in a vicinity of a second of the two lateral edges, which does not bear the first assembly tab;
• a second assembly tab extending in the extension of the trap in a direction perpendicular to the first assembly tab, said second assembly tab being fixed to a second of the two longitudinal edges, which does not comprise the snap-coupling means, and said second assembly tab being located in a vicinity of the second of the two lateral edges, which does not bear the first assembly tab,
• wherein said trap is configured to have a sufficient flexibility along the length thereof to permit twisting of said trap about a longitudinal torsion axis of the trap.