Container supplier Straight is to become a £20 million business this month when it buys competitor Blackwall.
Straight will acquire its fellow Leeds firm for an undisclosed figure as long as it gets shareholder approval at a meeting on January 17.
Formed in 1993, Straight is the market leading manufacturer of kerbside boxes. Blackwall, founded two years later, is the biggest maker of home composters.
"The merger gives both sets of customers access to the best elements of both brands."