The museum says visitors can contribute to the "Find Your Focus" online campaign beginning September 1.
The campaign will run through Oct. 23 on Razoo and the museum's website.
A live fundraising event will be held at the museum September 9.
The shrine room is dedicated to sacred Buddhist objects including textiles, sculptures and furniture.
Under the expansion, the shrine room installation will be moved upstairs to the upcoming exhibition "Sacred Spaces."
The Rubin focuses on the art of the Himalayas, India and surrounding regions.
