Whiteline Manufacturing has launched Define, an exclusive new chamfered sash that has been developed in partnership with Sheerline.

Through Whiteline, Define will now exclusively be offered as a primary aluminium sash style sitting alongside the flat contemporary and stepped styles. Define is available across Classic windows and the Classic Heritage door, as well as Prestige windows and doors, including bi-folds.

During a recent open day at Lingfield Racecourse, Whiteline’s customers had the opportunity to see the exclusive Define sash and also get to know the Sheerline range. This included the Classic Heritage door and the award-winning S1 roof lantern – reported to be the only lantern on the market to have Secured by Design status.

Louise Evans, Whiteline’s group managing director, said: “This latest product update demonstrates our relentless focus on continuous innovation, and that we’ve got an exciting year ahead. We’re proud of our partnership with Sheerline and look forward to developing future exclusives with them.”

Sheerline’s national sales director, Tony Basile, commented: “It was a fantastic day and really important for Whiteline’s customers to hear about and see the latest aluminium developments.

“From a Sheerline perspective, it was great for me to be there and explain how we provide an agile and responsive service and the benefits of this. For instance, we’ve been able to collaborate with Whiteline to develop an innovative, one-off solution tailored to their needs,” he added.