Crittall Windows is expanding beyond its core steel window business with the launch of Innervision, a new interior door range. The British manufacturer applies its signature steel-frame aesthetic to internal glazed doors, targeting architects and interior designers. The move taps into growing demand for industrial-style steel-glass partitions in commercial and residential refurbishment projects. Crittall positions the range as a natural extension for clients already specifying its windows, offering consistent design language across building envelopes and interior spaces.