Window modules
Deep-set openings formed as insulated box sections, delivering a generous reveal and a clean internal line without secondary framing.
Repeatable sizing across identical units
Insulated OSB modules · Residential & multi-family
The rigid core of modern multi-family.
MV3 fabricates window, corner and door modules as insulated OSB box sections held in a rigid frame — finished pieces of the envelope, engineered to slot into the way you already build.
Window · Corner · Door
Module range
Up to 40% higher R-values
Less thermal bridging
ASTM E72 and CAN/ULC S101
Structural and fire tested
Made in Calgary
Alberta innovation
MV3 Construction System
Insulated OSB window, corner and door modules — structural, hybrid and insulated components for residential and multi-family construction.
Designed and manufactured in Calgary, Alberta
The system
A module is a finished piece of the thermal envelope.
MV3 manufactures insulated box-section modules from oriented strand board, set within a rigid engineered frame. Each unit arrives as a complete window, corner or door assembly — filled, closed and dimensionally exact.
Because the insulation is part of the section rather than added afterwards, the envelope closes faster and with fewer interfaces to seal. Less cutting, less sealing, fewer call-backs.
- 01
- OSB box-section core
- Oriented strand board (OSB) forms the structural skin of every module, pressed and set as a closed box section rather than a flat panel.
- 02
- Exceptionally insulating fill
- The insulation sits inside the box section, so the module carries its thermal performance as one finished component.
- 03
- Rigid engineered frame
- The frame holds each opening square and true through handling, transport and installation — no on-site correction.
Door, corner and window elements: OSB skins held in a rigid engineered frame.
Fig. 01
The range
Three modules. One frame logic.
The range covers the openings that most define a residential elevation, fabricated to a common section and set-out so the detail never changes from unit to unit.
Corner modules
Corner assemblies that carry the same section around the building's turns, keeping the envelope continuous where it is hardest to control.
Continuous insulated section at the return
Door modules
Door openings sized for multi-family layouts, factory-set so thresholds, reveals and head details arrive already aligned.
Threshold and head set in the factory
Green build
Energy performance you can put in a brochure.
A fabric-first envelope does the quiet work: it holds heat in before a heat pump is ever specified. For a builder, that is a story worth telling — homes marketed on the strength of what they are made of, not just what is bolted to them.
- Fabric-first performance
- Insulation is built into the section, so the envelope performs before any mechanical system is sized.
- Less waste on site
- Modules are cut and filled to size in the factory — not trimmed and re-sealed on the scaffold.
- Aligned with carbon targets
- A contribution to the energy standards your projects are assessed against, and to international reduction targets.
Deep-set reveals at a multi-family project — the envelope as the finished interior surface.
For builders
Built for the way you already build.
MV3 is not a new construction method to learn. The modules integrate with current residential framing practice, so your existing trades can set them — with far less of the carpentry that is hardest to find.
Less on-site work
The corner, window and door framing elements arrive assembled. What was framing, insulate and seal becomes position, fix and close.
Less trade dependency
Skilled framing labour is the scarcest input on a residential site. Modules reduce how much of it each unit needs.
Current practice, not a new method
The modules work with the framing and set-out your crews already use — nothing to relearn, nothing to licence.
Repeatability across units
Identical modules mean identical openings, storey after storey, building after building.
Project 1 · Southwest Calgary
See MV3 framed, on a real 16-unit townhome build.
Framing begins later this month on MV3's first commercial project with the finalized system, ahead of full commercial production by spring 2027. We are inviting builders, designers and developers to watch it go up. Tell us who you are and we will contact you with the date as soon as it is confirmed.
Next step
Bring us a project.
Send a plan set, a unit count, or a question about whether the system suits your next build. You will hear back from one of the principals.