We are Fenestration Experts.

with over 100 years of cumulative direct, hands on fenestration experience.

Trusted by construction professionals

The word 'reliance' written in white lowercase letters on a blue background.
Gray background with white text that says 'TREASURE HILL'
Black background with the words 'GROUPE MY GROUP' in white outlined text, arranged in a square grid.
Emblem featuring a green pine tree in a yellow circle, topped with a royal crown, with a banner reading 'E PRINCIPIO' and the word 'BORDEN'.
Canadian flag with a red maple leaf symbol and the text 'National Defense' in English and French.
Colorful abstract logo with the words 'Colorful Brain Disorders'
Logo for ANA Contracting Limited featuring the company name in stylized text with a blue, gray, and green color scheme, and the slogan 'Concept to Completion'.

Why 3MA

Our team is made up of architects, project managers, manufacturers and dedicated installation specialists. Our process is the brainchild of our collective experiences.

“3MA are fenestration experts and we rely on them to deliver a complete fenestration solution”

D. Solo - Reilance Toronto.

We don’t just sell Windows and Doors

We are complete fenestration systems ranging from $39/SF up to $2500/LF

Project highlight

Niagara Parks

Size: 20,000 SF of openings

Scope: Replace windows with more efficient product while maintaining heritage look and feel.

Challenge: Overall size and scale with heritage product.

Solution: Pre-construction and logistical coordination prior to sitework.

Outcome: On budget, Zero delays

A historic stone building beside a waterway under a partly cloudy sky.
Interior of Niagara Parks. Large arched windows letting in natural light. A narrow water channel with glowing green water runs along the length of the building, with a metal walkway and railing on the right side.
A worker on a blue lift installing or maintaining a sign that reads 'CANADIAN NIAGARA POWER' on a historic stone building with arched windows.
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