Bradnam's Windows and Doors general manager Darrell Deacon said the group aimed to build on Conrel's excellent reputation for quality and service by bringing the strengths of the Bradnam Group to the Townsville branch.
Conrel directors Ron Woodford and Jim Meehan will take senior management positions within Bradnam's and continue to operate the Townsville business.
"Jim and I have been a part of Townsville for more than 30 years and we are counting on our customers and friends to continue to support us through our transition to Bradnam's," Mr Woodford said.
"As well as the ability to serve our customers better, it will also strengthen the economic prosperity of Townsville, as Bradnam's are committed to employing local people and supporting local business."
The Bradnam Group, comprising Bradnam's Windows and Doors Pty Ltd and National Glass Pty Ltd, is owned by Bill and Jan Bradnam, who started the business in 1977 from one outlet at Pialba, Hervey Bay.
Bradnam now serves Australia, the South Pacific, South-East Asia, Asia and New Zealand, with major outlets at Sydney, Melbourne and Brisbane.