Proudly Built in Canada. Perfect for Every Home

Slim Fixed Window

White, Energy Star: Most Efficient, Clear
Slim Fixed
Slim Fixed Window
Slim Fixed
Slim Fixed Window

Slim Fixed Window

White, Energy Star: Most Efficient, Clear

$172.50

  • The Iris Slim Fixed Window delivers maximum energy efficiency and clean architectural design.
  • With triple-glazed, Low-E, argon-filled glass, this
    non-operable window boasts an Energy Rating of 40 and is recognized as ENERGY STAR® Most Efficient in Canada.
View more details
Energy Star: Most Efficient Energy Efficiency Energy Star: Most Efficient

Which level is right for you?

When shopping for windows and doors, choosing products with ENERGY STAR certification ensures you're getting energy-efficient, high-performance solutions. ENERGY STAR® is a trusted government-backed program that helps homeowners identify the most energy-efficient products on the market. For windows and doors, ENERGY STAR certification means the product has been tested to meet strict standards for:

  • Insulation - keeping heat in during winter and out during summer
  • Solar Control - managing how sunlight affects indoor temperatures 
  • Airtightness - Preventing drafts and leaks 

For homeowners, this translates into lower energy bills, year-round comfort, and a reduced environmental footprint - all while increasing the value of your home. 

ENERGY STAR - ER 34

Our ENERGY STAR - certified windows achieve an Energy Rating (ER) of 34.

What this means for you:

  • Strong energy efficiency at an excellent value
  • Reliable performance that meets Canada's national standards
  • Noticeable savings on heating and cooling bills
  • Greater comfort with fewer drafts and more consistent indoor temperatures 
  • Eligibility for Canada's Greener Homes Loan (CGHL), making upgrades more affordable.

These windows are a smart choice for most Canadian homes. 

ENERGY STAR Most Efficient - ER 40

For those seeking maximum performance, ENERGY STAR Most Efficient products go a step further achieving an ER of 40.

What this means for you:

  • Elite energy performance - among the top tier of windows in Canada
  • Superior insulation and tighter sealing for maximum comfort
  • Ideal for extreme climates or homeowners seeking the best long-term savings
  • Eligibility for Canada’s Greener Homes Loan (CGHL), giving you access to financing options that make investing in top-tier efficiency even easier

Choosing an ER 40 window means you’re getting the highest level of efficiency available today—with the added benefit of financial support through CGHL.

So, which is best?
  • ENERGY STAR-certified products are excellent for most homes and provide strong energy savings at a good value.
  • However, if you want the highest level of efficiency, greater comfort, and the potential for larger rebates, Most Efficient products are worth the investment.

Ultimately, choosing any ENERGY STAR-certified product is important. It ensures your home is more comfortable, more cost-effective to run, and better for the environment—all without sacrificing quality or performance.
Slim Fixed Need a custom window?

Build yours by selecting size, hardware, glass type, and more.

Slim fixed windows features

Superior slim fixed windows crafted with exceptional quality, elegance, and efficiency.

White Glove Window Care

Delivered. Placed. Perfected.

Our white glove service ensures your windows arrive safely and are expertly set up—no stress, no surprises, just seamless service.

Contact us
Overview

Description

  • Designed for superior energy performance and a sleek, modern appearance, the Iris Slim Fixed Window is the ideal choice for spaces that need daylight and style—not ventilation.
  • This triple-glazed unit features a fusion-welded, multi-chambered vinyl frame that enhances structural strength and thermal insulation.
  • The slim profile design maximizes visible glass, filling your home with natural light while maintaining an airtight, high-efficiency envelope.
  • The triple-glazed, Low-E, argon-filled glass reduces heat transfer, boosts sound insulation, and helps you meet even the most demanding energy codes.
  • With an exceptional Energy Rating of 40, this window qualifies as ENERGY STAR® Most Efficient, making it a top-tier choice for cold climates and net-zero-ready homes.

Tips for Pros

  • Use in high-performance builds, net-zero homes, or energy-rebate eligible projects
  • Combine with triple-glazed casement or awning windows for full compliance with energy code
  • Ideal for feature walls, staircases, and transom units
  • Factory-mulled combinations streamline installation
  • Helps meet building envelope targets in all Canadian
    climate zones

Specifications
  • Energy Rating: 40 (ENERGY STAR® Most Efficient Certified)
  • Performance Grade: LC-PG65
  • Frame Depth: 3¼"
  • Glazing Options: Triple Pane (1-3/8”)
  • Material: uPVC Vinyl (Fusion-Welded)
  • Drainage: Concealed Internal System
  • Exterior Color: White
  • Interior Color: White
  • Certifications: NFRC, AAMA, Keystone
Shipping & Returns

Thank you for choosing IRIS Windows and Doors. We’re committed to delivering your windows and doors safely, reliably, and with full transparency. Please review our shipping policy before placing your order.

Order Processing Times

  • Stock Products: Ship within 10–15 business days.

  • Custom Products: Made to order. Production lead time is typically 3–5 weeks.

  • You’ll receive a confirmation email with tracking details once your order ships.

  • Processing times are estimates only and may be extended due to supply chain delays, seasonal demand, or special-order components. Iris Windows does not guarantee specific delivery dates.

  • Processing time does not include transit time. Transit times vary depending on destination and carrier scheduling.

Shipping Methods

Due to the size and fragility of our products, we use specialized freight services:

  • LTL Freight for smaller or palletized orders

  • Dedicated Trucking for larger volume shipments

  • White Glove Delivery may be available upon request (additional charges apply)

All deliveries are curbside only unless otherwise arranged. It is the customer’s responsibility to move the product indoors. The customer (or an authorized representative) must be present at delivery and be at least 18 years old.

Shipping Locations

We currently ship to addresses in Canada and United States.

  • We do not ship to PO Boxes or APO/FPO addresses.

  • Deliveries to remote or difficult-to-access locations may require additional time or surcharges.

Shipping Costs

  • Shipping rates are calculated at checkout based on order size, weight, and destination.

  • Free or promotional shipping may be available on select stock items.

Inspecting Your Delivery

Please inspect your delivery at the time of arrival:

  • Note any visible damage on the delivery slip.

  • Take photos immediately of the damage and packaging.

  • Report issues to us within 48 hours of delivery.

We cannot be responsible for damage not reported within this timeframe.

Missed Deliveries

If the carrier is unable to complete delivery due to inaccessibility, absence, or customer refusal:

  • A re-delivery fee will apply.

  • Storage fees may also apply if shipment is delayed beyond the scheduled window.

Backorders & Partial Shipments

If an item is on backorder, you will be notified and given the option to:

  • Wait for the full shipment

  • Receive available items first (additional shipping charges may apply)

  • Cancel the backordered item for a refund

International Shipping

We do not currently offer international shipping.
Please contact us if you are outside our delivery zone and would like to discuss options.

Need Help?

For any shipping-related questions, please contact us:
📧 info@iriswindows.com
📞 1-800-987-1898

Include your order number in your message for faster service.

Trusted by homeowners everywhere

Energy Efficiency at Its Best
Switching to Iris windows has made a noticeable difference in our energy bills. Not only are they beautiful, but they've also improved our home's insulation. Truly a worthwhile investment.
Jennifer R. Jan 2025
Exceptional Quality and Craftsmanship
We couldn't be happier with our new windows from Iris. The durability and sleek design exceeded our expectations.
Sarah L. Dec 2024
Outstanding Customer Service
From the initial consultation to the final installation, the Iris team was professional, knowledgeable, and friendly. They made the entire process seamless and stress-free.
David M. Sept 2024

More to explore