BARCELONA (Reuters) - The Spanish tennis federation (RFET) has appealed to Davis Cup organizers over the surface chosen by the United States for July's World Group quarter-final.

The company that made the court, which the RFET named as Premier Concepts Inc., was not one of 91 ITF-approved manufacturers, it added.

"It's a court that we are not familiar with because it doesn't meet the criteria," Spain Davis Cup captain Albert Costa told a news conference in Barcelona.

"So the problem I have right now is to explain to the players what kind of court they will encounter, because even if we wanted to train on a similar one we could not install it because it is not approved," he added.

The ITF said it had received the RFET's appeal, adding that its Davis Cup committee had been asked to consider whether the Austin surface complied with competition rules.

The July 8-10 tie is being staged at the Frank Erwin Center on the University of Texas campus in Austin, home town of former world number one Andy Roddick.

(Writing by Iain Rogers in Madrid, editing by Ed Osmond)