A laundry dryer including: - a dryer casing having a front wall, a rear wall, lateral walls, and a basement defining a basement plane (X,Y); - a drum rotatably accommodated within said casing and accessible via a door connected to said front door; - a process air conduit wherein drying process air is apt to flow, said process air conduit being connected to said drum so that said process air flows therethrough; - a process air generator, apt to generate drying process air, said process air generator being located within said process air conduit; - said process air conduit including a basement process air duct formed in said basement, said basement process air duct having walls and including a basement process air outlet where process air exits said basement, - a motor having a shaft defining a motor axis, said motor axis passing through an aperture provided in the basement process air duct and substantially at or in proximity of a center of said basement process air outlet; - wherein a plane perpendicular to said basement plane (X, Y) and sectioning said basement along said motor axis divides said basement process air duct in an outer (28outer) and in an inner portion (28inner), said outer portion (28outer) being the portion closer to a lateral wall of the casing; - wherein a section by a plane passing through said motor axis and sectioning said basement process duct portion and said basement outlet in said outer portion (28outer) defines a curve, a starting point (Pin) of said curve being located at said basement process air outlet and an end point (Pend) of said curve being located at said aperture; characterised in that in said section by said plane passing through the motor axis, the distance (D1,..., Di,....,DN) between a point of said curve and said motor axis is a decreasing monotone function if the position of said point moves from said starting point (Pin) to said end point (Pend). - a dryer casing having a front wall, a rear wall, lateral walls, and a basement defining a basement plane (X,Y); - a drum rotatably accommodated within said casing and accessible via a door connected to said front door; - a process air conduit wherein drying process air is apt to flow, said process air conduit being connected to said drum so that said process air flows therethrough; - a process air generator, apt to generate drying process air, said process air generator being located within said process air conduit; - said process air conduit including a basement process air duct formed in said basement, said basement process air duct having walls and including a basement process air outlet where process air exits said basement, - a motor having a shaft defining a motor axis, said motor axis passing through an aperture provided in the basement process air duct and substantially at or in proximity of a center of said basement process air outlet; - wherein a plane perpendicular to said basement plane (X, Y) and sectioning said basement along said motor axis divides said basement process air duct in an outer (28outer) and in an inner portion (28inner), said outer portion (28outer) being the portion closer to a lateral wall of the casing; - wherein a section by a plane passing through said motor axis and sectioning said basement process duct portion and said basement outlet in said outer portion (28outer) defines a curve, a starting point (Pin) of said curve being located at said basement process air outlet and an end point (Pend) of said curve being located at said aperture;