Original sentence: Chairs can be stacked on specially designed dollies for storage and movement.David Rowland designed the chair in 1964 and forty chairs able to be stacked within a height of 4 feet (120 cm) giving the chair its name.Over time it has received a number of design awards and is in the permanent collection of the Museum of Modern Art in New York, as well as other museums internationally.The 40/4 chair is the first compactly stackable chair invented.Various configurations allow the chairs to be stacked in a number of ways while striving to minimize the floor space utilized
Edited sentence: Chairs can be stacked on specially designed dollies for easy moving and storage.Forty chairs can be stacked within a height of 4 feet (120 cm), hence its name "40 in 4".Forty chairs on a single dolly take up 5.1 ft2 /  0.47 m2 of floor space.It is an all-purpose chair providing large-capacity movable seating, compact economical storage and comfort in sitting for long periods.It is considered a masterpiece of industrial design, and is in the permanent collection of the Museum of Modern Art in New York, as well as other museums internationally.Linked chairs in rows of two, three or four can be stacked up to 40 chairs high on special double, triple, or quadruple dollies.One hundred sixty chairs on a quadruple dolly take up less than 21.5 ft2 / 2 m2 of floor space.The 40/4 chair, designed by David Rowland in 1964, is the first compactly stackable chair invented.The chairs can also be linked together horizontally to form movable and stackable rows