Durham-based Eco-Site, which is deploying wireless infrastructure across the United States, has landed $50 million in capital from Guggenheim Partners, a global investment and advisory firm with more than $260 billion in assets.

Eco-Site recently drew the final $20 million of an earlier $80 million commitment.

The new funds will be used for further expansion of Eco-Site’s infrastructure to support wireless network operators.

“We’ve been able to expand at an exceptional pace over the past four years, which is a testament to the strength of our model and team,” said Dale Carey, founder and CEO of Eco-Site in making the announcement Wednesday. “We operate hundreds of sites across 37 states and the investment from Guggenheim helps us continue to scale at a rapid pace.”

Carey is a longtime wireless industry executive.

“The wireless infrastructure space is an attractive market with high growth potential, and Eco-Site has a proven track record of delivering innovative solutions to carriers,” says Matt Settle, director of Guggenheim Partners. “We look forward to supporting Eco-Site as they continue their exceptional growth path.”

Eco-Site launched in 2012.

The company has grown to more than 45 employees and is involved in “hundreds of wireless infrastructure projects,” Eco-Site says.

Eco-Site’s headquarters is based in Durham.

Atlanta-based MSouth Equity Partners provided the earlier $80 million funding.

Note: This story has been corrected to remove a reference to an earlier business model.