World-leading sash windows are the result of Caldwell’s collaboration with master fabricators Roseview. Roseview’s award-winning Rose Collection windows had already won respect throughout UK glazing for their uncompromising commitment to quality and authenticity.
But now that all three Rose Collection products come with Caldwell’s high-performance UL6 spring balances, they’re better than ever. The UL6 ensure that Roseview’s Charisma Rose, Heritage Rose and Ultimate Rose offer flawless operation. Providing up to 80% assisted lift, the UL6’s superior technology allows for smooth, quiet, maintenance-free operation.
Its high spring tension along the length of the balance prevents the sort of ‘hop and drop’ issues that affect so many windows that use lower-quality components. What’s more, it’s currently the only spring balance on the market that achieves AAMA Class 6 (the highest grade possible) in performance testing.




