Vi5.
Slimmer sightlines and an optional nailing fin for framed walls. The 70 mm (2-3/4″), five-chamber window with a steel core.
The numbers.
The highest each rating has reached in the lab, with the report behind it. Your sizes and your glass set the numbers for your building, and we give you those exactly.
Structural, water and air: Intertek reports L4554.02-250-44 (fixed) and L4554.01-250-44 (casement, CW-PG50). Energy: NFRC CPD VST-K-9-00032-00001. Sound: Intertek report P7089. Each best value comes from its own type and glass — pick yours below.
Three ways to glaze it.
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Ready for framed walls.
The Vi5 frame takes an optional nailing fin, so it fixes to a framed wall the way your installer expects. Inside, the red core is steel — it runs through the frame and the sash.
The same frame, no fin.
For openings in masonry or block, the Vi5 frame comes without the fin and is anchored through the jambs. Inside, the red core is steel — it runs through the frame and the sash.
A hinge you can see,
and reach.
The Vi5 hangs on standard hinges, set on the face of the frame under a cover in the hardware color. They carry the whole weight of the sash, and because they are in plain view they are quick to adjust: up and down, side to side, and tighter or looser against the seal.
Everything to specify it.
Open to everyone. CAD files and the submittal builder need an architect sign-in.