Exhibitors Carmike Cinemas and Marcus Theaters, the nation’s fourth- and fifth-largest theater chains, respectively, have joined the Digital Cinema Distribution Coalition along with Wehrenberg Theaters as exhibitor customers, the coalition announced Wednesday.

Carmike brings 2,917 screens and 278 theaters in 41 states, with Marcus adding 685 screens at 55 locations across seven Midwestern states. Wehrenberg totals 16 theaters with 218 screens. The new additions expands the DCDC to more than 21,000 screens in more than 1,800 sites across North America.

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“The addition of Carmike Cinemas, Marcus Theaters and Wehrenberg Theaters, which join Southern Theaters, National Amusements and our founders, caps a phenomenal year of growth for us,” said DCDC CEO Randy Blotky. “These great theater operators, as well as our many top content provider customers, are drawn to our state-of-the-art, cost-effective and efficient digital delivery platform and our unique business model, which provides a fair and uniform pricing structure to all of our customers.”

Formed by AMC Theaters, Regal Entertainment Group, Cinemark Theaters, Universal Pictures and Warner Bros. in Oct. 2013, DCDC provides theatrical digital delivery services through a network of  satellite and terrestrial distribution technologies. The satellite distribution system allows content providers to sent films and other content without the need for shipping hard drives.

In addition to Warner Bros. and Universal, the Walt Disney Company, Sony Pictures, 20th Century Fox, Paramount Pictures, Lionsgate, Focus Features, Open Road and Freestyle Releasing have all signed on as content provider customers of DCDC.

The deal caps an active year for the coalition, including the acquisition of the Deluxe/EchoStar satellite network in March.