The National Gallery of Art will close its East Building from Feb. 28 until June to speed up the replacement of its atrium skylight, the museum announced Thursday. The replacement of the 40-year-old skylight is one of multiple major renovations the NGA is undergoing through fall 2022.

The renovation will postpone the opening of a new exhibit The Double: Identity and Difference in Art Since 1900, which will now open in July.

“While the building is in the final phase of renovations to its public spaces, the visitor experience has been diminished by construction and displacement of key works of art,” Kaywin Feldman, the NGA director, said in a statement. “Closing to the public temporarily allows us to bring the full splendor of the East Building to visitors much sooner than if we were to remain open during renovations.”

The museum is replacing the 23,000-square-foot skylight using small cranes on the roof to swap out the original glass with new panels. Workers will replace the panels from a suspended platform underneath the skylight. In summer 2020, the NGA removed sculptor Alexander Calder’s mobile and installed protective cases around the other large sculptures in the atrium — the art will be returned once the work is finished.

In the meantime, visitors can continue to visit the West Building, sculpture garden, and pavilion during regular hours. Guests can schedule appointments to visit the East Building’s library and study center. When the building reopens in the summer, the gallery will have a more accessible entrance, new restrooms, a separate lobby near the auditorium, and new art installations.