
Why this one
The insulation tier. Triple glazing as the standard build on an 80 mm section, specified where heat, cold or noise asks for more than two panes.
The numbers
Specifications are the system as supplied by the manufacturer and are confirmed at assessment. Wood interior: solid hardwood, American oak standard. See finishes. No price is quoted sight-unseen; an honest number needs your opening’s measurements.
The finish range
The manufacturer’s finish sheet: natural timbers, stains, and a painted range across creams, greens and grays.
Tap any finish for a closer look.
Species is a use decision before it is a color decision. American oak is the standard interior. Physical samples decide the final call at assessment.




















