Stephen Fendler, president of CM Almy, shows off a rack of samples from his brand-new women’s collection, pointing out a piece he’s particularly proud of: a black blouse in a stretchy jersey knit.

But Mr. Fendler’s collections won’t be seen on the runways anytime soon. CM Almy says it is the largest, and one of the oldest, American producers of clerical clothing, and its models are hitting the pulpit instead of the catwalk. Their designers create garments for priests, ministers and bishops mainly within the Episcopal, Lutheran and Roman Catholic churches — from everyday plain shirts and white collars, to the more elaborate and colorful ceremonial chasubles.

“We have seasons, and items go in and out of style just like the fashion world,” Mr. Fendler said. But “our style changes are driven by evolutions in holy ceremonies. Nobody would call us the most fashion-forward company in the marketplace.”

The family-run company has been making clerical clothing and supplies since 1892, when an uncle of Mr. Fendler’s grandfather started the business near a seminary in Chelsea. Today, CM Almy is based in Armonk, N.Y., with a showroom in Greenwich, Conn. Mr. Fendler’s brother and the company’s vice president, Michael Fendler, runs the manufacturing end of the business in Maine. Among their clients are Cardinal Timothy M. Dolan and the priests at St. Patrick’s Cathedral.