A mullion includes a body including a first co-extruded portion and a second co-extruded portion adjacent to the first co-extruded portion. The second co-extruded portion has a lower density than the first co-extruded portion. In some implementations, the mullion includes a body having a rear section and a pair of opposing lateral sections adjoining either side of the rear section. The lateral sections can each include two or more walls spaced from one another in a lateral direction.

An access door assembly is for a floor structure. The access door assembly includes a door frame coupled to the floor structure and defining an opening aligned with a staircase, and an access door within the opening and having first and second longitudinal sides. The first longitudinal side defines a first opposing bevelled surface, and the floor structure adjacent the opening defines a second opposing bevelled surface. The access door assembly also includes an arm coupled to the access door and configured to pivot the access door between an open state and a closed state. The first and second opposing bevelled surfaces are aligned and abutting in the closed state, and are in spaced apart relation in the open state.

An access door assembly is for a floor structure. The access door assembly includes a door frame coupled to the floor structure and defining an opening aligned with a staircase, and an access door within the opening and having first and second longitudinal sides. The first longitudinal side defines a first opposing bevelled surface, and the floor structure adjacent the opening defines a second opposing bevelled surface. The access door assembly also includes an arm coupled to the access door and configured to pivot the access door between an open state and a closed state. The first and second opposing bevelled surfaces are aligned and abutting in the closed state, and are in spaced apart relation in the open state.

An entrance refrigerator includes an upper first cold air supply on an upper portion and a lower second cold air supply on a lower portion, and an external air guide provided between the upper first cold air supply and the lower second cold air supply.

A tower segment, in particular for a tower of a wind turbine, a wind turbine, and a method for manufacturing a tower segment is provided. A tower segment, in particular for a tower of a wind turbine, comprising a casing segment with an inner casing surface, an outer casing surface and a cutout for a door, wherein the inner casing surface has a first inner reinforcing portion and/or the outer casing surface has an outer reinforcing portion, wherein the inner reinforcing portion and/or the outer reinforcing portion adjoin the cutout, and the inner reinforcing portion has an inner reinforcing plate and/or the outer reinforcing portion has an outer reinforcing plate.

A tower segment, in particular for a tower of a wind turbine, a wind turbine, and a method for manufacturing a tower segment is provided. A tower segment, in particular for a tower of a wind turbine, comprising a casing segment with an inner casing surface, an outer casing surface and a cutout for a door, wherein the inner casing surface has a first inner reinforcing portion and/or the outer casing surface has an outer reinforcing portion, wherein the inner reinforcing portion and/or the outer reinforcing portion adjoin the cutout, and the inner reinforcing portion has an inner reinforcing plate and/or the outer reinforcing portion has an outer reinforcing plate.

An attic door support and trimming system includes a plurality of frame sections each having a base wall with an inner edge, an outer edge, a top side and a bottom side, a first end and a second end. A vertical wall extends upwardly from the base wall and is spaced from the inner and outer edges. The first and second ends of different frame sections are positionable against each other to form a rectangular shaped frame. The frame sections each are telescopic to allow a size of the rectangular shaped frame to be adjusted. The top side of the first flange is abuttable against the ceiling adjacent to the opening and the top of the second flange supports a cover when the cover is placed in a closed position closing the opening.

An attic door support and trimming system includes a plurality of frame sections each having a base wall with an inner edge, an outer edge, a top side and a bottom side, a first end and a second end. A vertical wall extends upwardly from the base wall and is spaced from the inner and outer edges. The first and second ends of different frame sections are positionable against each other to form a rectangular shaped frame. The frame sections each are telescopic to allow a size of the rectangular shaped frame to be adjusted. The top side of the first flange is abuttable against the ceiling adjacent to the opening and the top of the second flange supports a cover when the cover is placed in a closed position closing the opening.

A method of installing a combination door unit into a threshold of a house, comprising placing a combination door unit within a threshold opening of a house surrounded by a plurality of house frame studs. The combination door unit comprises a door frame, a threshold door hingedly coupled to the door frame, and a secondary door. The secondary door is hingedly coupled to a mounting frame and the mounting frame, the door frame, and the plurality of house frame studs are aligned when the combination door unit is placed within the threshold opening. The method of installing the combination door unit may also comprise the steps of leveling the combination door unit, removing the secondary door from the combination door unit, driving a plurality of fasteners through the mounting frame, through the door frame, and into the house frame studs, and replacing the secondary door on the combination door unit.

A method of installing a combination door unit into a threshold of a house, comprising placing a combination door unit within a threshold opening of a house surrounded by a plurality of house frame studs. The combination door unit comprises a door frame, a threshold door hingedly coupled to the door frame, and a secondary door. The secondary door is hingedly coupled to a mounting frame and the mounting frame, the door frame, and the plurality of house frame studs are aligned when the combination door unit is placed within the threshold opening. The method of installing the combination door unit may also comprise the steps of leveling the combination door unit, removing the secondary door from the combination door unit, driving a plurality of fasteners through the mounting frame, through the door frame, and into the house frame studs, and replacing the secondary door on the combination door unit.