Ostaco

What Ostaco does

Ostaco is a privately held Canadian manufacturer of custom windows and doors, founded in 1981 and headquartered at 248 Bowes Rd, Concord, Ontario. The company operates its consumer-facing brand as Frank™ (also styled Frank-by-Ostaco), producing three product categories: windows (with four distinct sub-lines), smooth fiberglass entry doors, and sliding doors. Technical differentiation centers on energy-efficient window construction, specifically sealed argon gas layers and warm edge spacers, which have earned the Frank window line an Energy Star "Most Efficient" rating. Products carry the Ontario Made certification, reinforcing local-manufacturing positioning.

Ostaco operates an exclusive authorized-dealer go-to-market model with no direct-to-consumer sales; pricing is set at the dealer level, and customers locate dealers via a "Find a Dealer" tool on the company's website. The customer base spans three segments: homeowners undertaking replacement or renovation work (primary), new construction builders, and professional contractors. The company's stated geographic footprint is Ontario, Canada, with no disclosed operations outside the province.

The business model is straightforward hardware sales (windows, entry doors, sliding doors) sold through third-party dealers who handle quoting, installation, and service. There are no recurring software, subscription, or service-revenue streams disclosed. Ostaco does not publish revenue, does not appear in public funding databases, and has no disclosed institutional investors, M&A activity, or leadership changes in the source material, limiting visibility into growth rate and ownership structure.

Name

Ostaco

Legal name

Ostaco

Website

https://ostaco.com

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

101–250 employees

Short description

Ostaco is a Concord, Ontario-based manufacturer of custom windows, entry doors, and sliding doors, sold under the Frank™ brand through an authorized dealer network serving homeowners, contractors, and builders primarily in Ontario, Canada.

Ownership category

akta.pro rank

Product category

Window and Door Manufacturing

NAICS

Metal Window and Door Manufacturing (332321)

SIC

Metal Doors, Sash, Frames, Moldings & Trim (3442)

akta.pro primary industry

Custom Window & Door Fabrication & Replacement (HSAPAJAI)

akta.pro secondary industry

Windows (IMADAIAC)

Keywords

• Custom window manufacturing
• Fiberglass entry doors
• Sliding patio doors
• Energy efficient windows
• Residential door manufacturing

Headquarters

HQ city

Concord

HQ country

Canada

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Windows Sales: Sale of replacement, renovation, and new construction windows through authorized dealer network
2. Entry Doors Sales: Premium entry doors including smooth fiberglass doors sold through dealer network
3. Sliding Doors Sales: Premium sliding doors for seamless indoor-outdoor integration sold through dealer network

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Ostaco manufactures custom residential windows, entry doors, and sliding doors under the "Frank" brand at its Ontario-based facility. Products are custom-built to required specifications and sold exclusively through an authorized dealer network serving both residential replacement/renovation and new construction applications.

Product overview

Frank™ by Ostaco is an Ontario-based manufacturer of windows and doors offering three core product categories: Windows (featuring four distinct product lines with extensive customization options for replacement, renovation, or new construction), Entry Doors (premium fiberglass doors combining style with durability and security), and Sliding Doors (premium solutions for seamless indoor-outdoor integration). The company emphasizes energy efficiency with sealed argon gas layers and warm edge spacers, and positions itself as a precision-crafted, customizable solution for residential projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Frank Windows Custom-manufactured residential windows under the Frank brand, built to specified sizes and configurations with energy-efficient features, sold through authorized dealers for residential replacement and new construction applications.
• Frank Entry Doors Custom-manufactured fiberglass residential entry doors under the Frank brand, available in configurable sizes and finishes, sold through authorized dealers for residential replacement and new construction applications.
• Frank Sliding Doors Custom-manufactured residential sliding patio doors under the Frank brand, built to specified sizes, sold through authorized dealers for residential replacement and new construction applications.

Quantifiable outcome

• Energy Star rating as most efficient

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

One partnership is on record.

• Support Ontario MademinorGTM or Marketing PartnerFrank™ by Ostaco participates in the Support Ontario Made program, displaying the Ontario Made badge on their products and website. This partnership provides marketing visibility and positions the brand as a local manufacturer committed to Ontario production.

Scale indicators1 record

Recent moves5 records

Expansion highlights4 records

Direct peers

• Marvin: Premium US manufacturer of windows and doors (including signature, infinity, and replacement lines). Competes with Frank in the premium residential fenestration segment, particularly for buyers seeking customization and energy-efficient products.
• Loewen Windows and Doors: Canadian manufacturer of premium custom windows and doors headquartered in Steinbach, Manitoba. Closely comparable to Frank by Ostaco as a Canadian-made, customization-focused window/door manufacturer with overlapping product lines and dealer-based distribution.
• Pella Corporation: Privately held US manufacturer of windows and entry/patio doors. Competes directly with Frank across windows, entry doors, and sliding doors in the premium residential segment with overlapping dealer/distributor channels.
• Masonite International: Leading global manufacturer of interior and entry doors, including fiberglass door systems. Frank's entry door line competes directly with Masonite's fiberglass door portfolio, and Masonite serves residential replacement and new construction via similar dealer networks.
• Vinyl Window Designs: Ontario-based manufacturer of custom vinyl windows and doors. Directly comparable to Frank as a regional Ontario window/door manufacturer focused on replacement and new construction with similar customer segments.
• North Star Windows: Ontario-based manufacturer of vinyl windows for the replacement and new construction markets. Comparable regional peer to Frank in the Ontario window manufacturing category with overlapping dealer distribution.
• Andersen Corporation: Major North American manufacturer of premium windows and doors (including entry and patio/sliding doors). Competes with Frank in the residential replacement and new construction segments across all three of Frank's product categories.
• Jeld-Wen: One of North America's largest manufacturers of windows, doors, and related building products. Directly comparable to Frank by Ostaco across all three product categories (windows, entry doors, sliding/patio doors) and overlapping dealer distribution channels.
• Kohltech Windows & Entrance Systems: Atlantic Canadian manufacturer of windows and entrance door systems. Comparable to Frank as a regional Canadian window and entry door manufacturer serving residential replacement and new construction through dealer channels.
• All Weather Windows: Canadian manufacturer of windows and doors serving residential and light commercial markets. Directly comparable to Frank across window and door categories with overlapping dealer-based GTM in Western and Central Canada.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/OstacoWindowsDoors
• LinkedInlinkedin.com/company/ostaco

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ostaco