Dual, independent sash operation puts you in control — optimize airflow without sacrificing comfort or efficiency

Durable framing, multi-layer sealing, and premium hardware

Featuring a tilt-in design, these windows allow for safe, interior cleaning of both sashes

Double Hung Windows

Window Force Double Hung windows are engineered for versatility, ventilation, and easy maintenance. Both sashes operate independently, giving homeowners full control over airflow while preserving energy efficiency and interior comfort. With durable framing, multi-layer weather sealing, and premium hardware, these windows provide a balanced combination of performance and timeless style.

Dual sashes

Tilt-in mechanism

Sealed unit

Internal chambers

uPVC material

Jamb extensions

Fusion welded corners

Inside trim

Outside vinyl brickmoulds

Dual-Sash Ventilation Control

Top and bottom sashes open separately, allowing flexible airflow management without compromising security or insulation.

Effortless Cleaning From Indoors

Tilt-in mechanisms let you clean both sashes safely from inside the home — ideal for multi-story properties.

Two operable sashes
for customizable ventilation

Tilt-in function
for easy interior cleaning

Strong energy efficiency
with insulated frames

Multi-point
locking systems

Wide selection of sizes
and configurations

Multiple
colors and finishes

Advanced weatherproofing
for reduced drafts

Smooth sash operation
with premium hardware

Low-maintenance
design

Slim, Architectural Sightlines

Narrow profiles enhance curb appeal and maximize natural light while maintaining strength.

Interior Comfort & Noise Control

Enhanced glazing reduces outside noise and supports stable indoor temperatures.

Double Hung windows are available in both the Ultraslim and Classic series

Ultraslim Series

With a deeper 4-9/16″ frame and a slimmer 2-7/8″ visible profile, the UltraSlim Series with hidden gasket delivers a sleek, modern look while maximizing glass area. It is designed for seamless integration into new construction and larger openings.

Classic Series

A proven 3-1/4″ frame depth with a standard profile, the Classic Series is ideal for retrofit and replacement projects. It delivers excellent thermal performance, a familiar aesthetic, and reliable compatibility with a wide variety of installation conditions.

Highly Customizable

Highly customizable to fit every need, our windows offer a broad selection of options including colors, jambs, casings, brickmoulds, glazing types, including privacy glass, and a variety of grill designs. Tailor your windows precisely to your style and functional preferences for a truly personalized finish.

Colour Options

At Window Force, we offer a carefully curated palette of durable, fade-resistant colours designed to match any architectural style, from classic to contemporary.

Explore Colour Options

Glass Options

We provide a wide range of advanced glass types tailored for modern window systems. From partially transparent decorative glass with artistic textures for enhanced privacy, to high-performance Low-E coatings that improve energy efficiency.

Explore Glass Options

Jambs, Casing, Brickmoulds

Jambs, casings, and brickmoulds come in a variety of sizes to suit different needs, and they're available in a full color palette to complement your design vision. These components provide versatile options for functional and aesthetic window finishing.

Explore Options

Grills Options

If you want to enhance your windows with decorative pane patterns, we offer a flexible range of interior grill shapes to choose from — from the most common layouts to fully custom designs made to fit your style.

Explore Grills Options

Technical Specifications

Model	DHT_IS_CLRCARD-ARG90-CARD180#3	DHT_IS_CLRCARD-ARG90-CARD180#3-ARG90-CLRCARD
U-factor (W/m² – K)	1.71	1.66
Solar Heat Gain (SHGC)	0.52	0.47
Energy Rating	31	30
ENERGY STAR Zones, 2015	1 \| 2	1 \| 2
ENERGY STAR Zones, 2010	ABC	ABC
Layers of Glazing	2	3
NRCan Reference	NR9161-12602012-ES	NR9161-12602016-ES
Energy Efficiency Verification Reference	W535-1	W535-1
U-factor (Btu/h/ft² – °F)	0.3	0.29
Visible Transmittance	0.59	0.54
Air Leakage — Infiltration (l/s*m²)	0.44	0.44
Air Leakage — Exfiltration (l/s*m²)	0.76	0.76

Frequently Asked Questions

What are double hung windows and how do they operate?

Double hung windows feature two operable sashes — top and bottom — that slide vertically within the frame. Both sashes can tilt inward, making them easy to clean from inside the home. They offer flexible ventilation: open the top, bottom, or both for airflow control. Compared to single-hung windows (where only the bottom sash moves) or sliders (which open side to side), double hung designs provide more control and often include integrated screens and smooth-operating hardware.

What should Toronto and GTA homeowners know about double hung windows?

Double hung windows are a natural fit for many Toronto-area homes — especially those with brick or siding exteriors. They're available in standard and custom sizes, come with energy-efficiency certifications like Energy Star, and help reduce noise from busy urban streets. Window Force products are fully backed by warranty, with service coverage across the GTA.

What are the advantages of double hung vinyl windows?

Vinyl double hung windows offer lasting durability with minimal upkeep. The multi-chambered frames enhance insulation, while color and hardware options let homeowners match any design. Unlike the myths, modern vinyl is strong, stable, and long-lasting, especially when manufactured to local performance standards like ours at Window Force.

How can you buy double hung windows from Window Force?

It starts with a quick quote request online. From there, our team walks you through product selection, measurements, and customization. Once your order is confirmed, we build the units and arrange for delivery or pickup. Lead times are clearly communicated, and warranty registration is part of the process for peace of mind.

How does Window Force manufacture and test double hung units?

Each unit begins with precision-cut extrusions sourced from trusted suppliers. We weld corners for maximum strength, test drainage, and inspect sash movement and lock alignment. Our QA checkpoints cover appearance, operation, and sealing, so only high-performing windows reach the customer.

Which installation details matter for long-term performance?

A quality window needs a quality install. Prep the rough opening carefully, shim properly to ensure square alignment, and follow correct fastening patterns. Use sealants that last, and finish with trim that protects. Miss any of these, and you risk air leaks, water entry, or callbacks.

How does Window Force work with contractors on double hung supply?

We offer contractor pricing tiers, dependable stock, and jobsite delivery options. Our team supports each build with shop drawings, guidance, and fast RMA turnaround when needed. Whether it's a single home or a full subdivision, Window Force makes supply simple.

Why do dealers choose Window Force for double hung models?

Because we deliver what they need to succeed. That means consistent lead times, competitive margins, marketing support, product samples, and training for their teams. And when something goes wrong? Our after-sales service keeps dealer relationships strong.