NEW YORK (Reuters) - HNI Corp (HNI.N: Quote, Profile, Research), which makes office furniture and hearth products, on Thursday forecast second-quarter revenue flat to down 5 percent.

Executives speaking during a conference call also predicted that hearth sales would fall 20 percent in the second quarter, while sales of office furniture would be flat to up 5 percent.

In 2007, it had net sales of $2.6 billion, with about 82 percent from office furniture products and 18 percent from hearth products.

(Reporting by Helen Chernikoff)