A blank forms a dispenser carton. The dispenser carton receives a rolled sheet to form a dispenser carton assembly. The dispenser carton has a top panel. A dispensing state of the dispenser carton the top panel includes a pair of locking tabs with notches received by a pair of flaps of side panels of the dispenser carton. The pair of flaps each have flap notches. The flap notches provide a gap between a top panel flange and a front panel of the dispenser carton. The pair of locking tabs are received into flap apertures of the pair of flaps. A pair of triangular gaps separate a portion of a back panel of the dispenser carton from left and right side panels to bias the pair of locking tabs against stops of the pair of flaps. A bottom panel of the dispenser carton includes a bottom aperture.