This new product builds upon the performance, aesthetics and design flexibility of the Sterling double hung product line, the company reports. Ultra Series XL Sterling presents the warmth of wood on the interior with low-maintenance, extruded aluminum cladding and durable finishes on the exterior. Ultra Series products offer exterior casings and nosings, numerous exterior colors and finishes, various wood species, interior prefinishes, performance divided lites, and more.
“With wood interior covers to provide a clean, consistent appearance and Class 5 balances for ease of operation in larger sizes, XL Sterling double hungs are a perfect fit for any oversized commercial opening,” says Kolbe product and market manager, Lance Premeau, LEED Green Associate.Energy-efficient, insulating LoE2-270 glass is standard on XL Sterling windows with several customization options to meet specific climate zone conditions and aesthetic preferences. The XL Sterling has been tested and impact-certified to IPD4 levels up to a 48-by-120-inch size.
