Current Offers on Infinity® by Marvin® Windows, Patio Doors, and James Hardie® Siding
Current Offers - Ends September 30, 2026
- 25% off Infinity® by Marvin® fiberglass windows (minimum of 4 windows or patio doors)
- 25% off Infinity® by Marvin® patio doors
- 20% off James Hardie® fiber cement siding
- Free in-home consultation and estimate
Discounts apply to new quotes only and cannot be combined with other offers, previous quotes, or existing contracts. The 25% window and patio door discount requires the purchase of 4 or more Infinity® by Marvin® windows or patio doors. The 20% siding discount applies to James Hardie® fiber cement siding projects. To qualify, your first contact for a free estimate must be made and documented by September 30, 2026, with your appointment occurring within 14 days of your inquiry, subject to availability. Discounts are applied by our representative when the contract is signed. Offers are reviewed monthly and may change or end without notice. Contact Gravina's Window Center of Littleton® for full details.
Request your free consultation or call 303-794-0490
Why Fall Is a Good Time to Replace Windows in Colorado
The first cold snaps show you exactly where your home is losing heat. Drafts near the glass, condensation between panes, and frames that stick or leak become hard to ignore once nights drop below freezing.
Infinity® by Marvin® windows are made to order, so there is a lead time between ordering and installation. Your consultation is the right time to ask about current lead times, so you can plan your project around the season.
Infinity windows are built with Ultrex® fiberglass, which Marvin reports is eight times stronger than vinyl. Fiberglass stays stable through Colorado's rapid temperature swings, while vinyl frames can expand, contract, and lose their fit over time.
Why Denver Homeowners Choose Gravina's Window Center of Littleton®
- Colorado's oldest Infinity® by Marvin® dealer, authorized since 2003 and an Infinity Diamond Partner
- Family-owned in Littleton since 1973
- Installed by our own W-2 crews, not subcontractors, and backed by our lifetime workmanship warranty
- A+ rating with the Better Business Bureau
- Showrooms in Littleton and North Denver, where you can see Infinity windows in person
- Financing available with approved credit
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Offer and Financing Terms
Discounts apply to new quotes only and cannot be combined with other offers, previous quotes, or existing contracts. The 25% window and patio door discount requires the purchase of 4 or more Infinity® by Marvin® windows or patio doors. The 20% siding discount applies to James Hardie® fiber cement siding projects. To qualify, your first contact for a free estimate must be made and documented by September 30, 2026, with your appointment occurring within 14 days of your inquiry, subject to availability. Discounts are applied by our representative when the contract is signed. Offers are reviewed monthly and may change or end without notice. For full terms and conditions, contact Gravina's Window Center of Littleton® at 303-794-0490 or visit one of our showrooms.
Financing available with approved credit and qualified purchase. Not all applicants will qualify. Minimum purchase required for the 12-Month No Interest/No Payment financing offer. Financing terms and eligibility are based on creditworthiness and lender criteria. Offer valid only for projects booked during the current promotional period.
Promotional terms, including 0% interest financing, are estimates only. Interest accrues from the date of purchase but is waived if the balance is paid in full within the promotional period. Applicants with lower credit ratings may be subject to higher rates or different terms. Actual rates and terms will vary based on individual financial situations and lender review. This is not a guaranteed offer.