Laundry treating apparatus

A laundry treating apparatus comprising:

• a drum configured to rotate about a rotation axis extending in a front-rear direction of the drum;
• and
• a lifter that is disposed at an inner circumferential surface of the drum and that is configured to, based on the drum rotating, revolve around the rotation axis,
• wherein the lifter comprises a lifter frame disposed at the inner circumferential surface of the drum and a frame cover that is coupled to the lifter frame and that protrudes radially inward from the inner circumferential surface of the drum,
• wherein the lifter frame comprises (i) a frame base that is coupled to the inner circumferential surface of the drum and that includes a seating groove provided along a circumference of the frame base, (ii) a frame upper plate spaced apart from the frame base in a direction toward a center of the drum, and (iii) a frame sidewall connecting the frame upper plate to the frame base,
• wherein the frame cover comprises a cover upper plate having an inner surface that faces the frame upper plate and a cover sidewall having a lower end and an upper end, wherein the lower end of the cover sidewall is mounted on the seating groove to couple to the frame base, and the upper end of the cover sidewall is connected to the cover upper plate, and
• wherein a spacing rib providing a space between the cover sidewall and the frame sidewall protrudes from the seating groove.