Mills Window & Door

Mills Window & Door We Like Our Alside Windows, But We Offer One-Stop Shopping for All Major Window Manufacturers, Including Marvin, Pella, Jeld Wen and The Rest! Call today!

With over 25 years of Window, Door & Millwork industry experience in the St. Louis and surrounding area, Mills Window & Door is known for the quality, value, and excellent customer service that we provide our residential clients. Our knowledgeable and professional staff will go the distance to ensure your Window and Door purchase and installation meets and exceeds your standards. From the initial

consultation, throughout the selections and purchase process, through installation and for years to come, you will find the staff at Mills Window and Door ready and willing to serve your replacement Window, Low-Maintenance Vinyl Siding, & Patio Door needs. We will also take the time to properly educate you on our complete line of products, so that you can be certain you are choosing the right products and materials, at a price you can afford.

FATHER’S DAY SPECIAL: $100 OFF EACH WINDOW through June with a minimum order of 3 windows plus 18-month no-interest fina...
06/04/2026

FATHER’S DAY SPECIAL: $100 OFF EACH WINDOW through June with a minimum order of 3 windows plus 18-month no-interest financing w.a.c. 👔

Every dad has that moment in summer where he walks past the thermostat, sighs, and says, “Why does it still feel hot in here?”

If your AC runs nonstop but certain rooms still won’t cool down, your windows may be costing you comfort every single day.

Call Mills Window & Door at (636) 349-4444 for your free consultation.

Call Mills Window & Door at (636) 349-4444 for your free consultation.

Some upgrades change how your house feels every single day. ✨Cooler rooms. Less outside noise. Better light. Lower maint...
05/29/2026

Some upgrades change how your house feels every single day. ✨

Cooler rooms. Less outside noise. Better light. Lower maintenance. That’s the stuff homeowners actually notice long after installation day.

MillsWindow.com

Wood siding keeps asking for attention year after year. 🪵Modern low-maintenance siding gives homeowners more weekends ba...
05/28/2026

Wood siding keeps asking for attention year after year. 🪵

Modern low-maintenance siding gives homeowners more weekends back and fewer repair headaches over time.

Call Mills Window & Door at (636) 349-4444 for a free siding consultation.

25+ years in St. Louis means we know what homes here need. 📍From windows and doors to siding that hold up in Midwest wea...
05/22/2026

25+ years in St. Louis means we know what homes here need. 📍
From windows and doors to siding that hold up in Midwest weather.
Work with a local expert who understands your home.
Book your free consultation.

Hot spots in your home are a sign your windows are failing. 🌡️Energy-efficient replacements help keep temperatures consi...
05/21/2026

Hot spots in your home are a sign your windows are failing. 🌡️
Energy-efficient replacements help keep temperatures consistent and reduce AC strain.

Your front door does more than welcome people in. 🚪It affects insulation, security, and overall energy loss.Upgrade to a...
05/15/2026

Your front door does more than welcome people in. 🚪
It affects insulation, security, and overall energy loss.
Upgrade to a custom-fit door before summer and feel the difference immediately.
Schedule your consultation today.

If your AC is already working overtime, your windows are likely the problem. ☀️Old windows let heat in and drive your en...
05/14/2026

If your AC is already working overtime, your windows are likely the problem. ☀️
Old windows let heat in and drive your energy bills up fast.
Get ahead of summer and save $100 off each installed window through May 26.
Minimum 3 windows. Schedule your free consultation today.

If you are replacing windows this year, timing matters. ⏳Right now you can save $100 per window with a minimum of 3 inst...
05/08/2026

If you are replacing windows this year, timing matters. ⏳
Right now you can save $100 per window with a minimum of 3 installed through May 26.
That adds up fast on a full-home project.
Book your free consultation before the deadline.

MillsWindow.com

Old siding costs more than you think. 💸Maintenance, repairs, and energy loss all add up over time.With 40% off siding th...
05/07/2026

Old siding costs more than you think. 💸
Maintenance, repairs, and energy loss all add up over time.
With 40% off siding through May 26, now is the time to replace it and reduce long-term costs.
Schedule your consultation today. MillsWindow.com

Spring is when siding problems become obvious. 🏡Fading, cracking, and warping only get worse in summer heat.SAVE 40% off...
05/01/2026

Spring is when siding problems become obvious. 🏡
Fading, cracking, and warping only get worse in summer heat.
SAVE 40% off siding through May 26 and upgrade now.
Book your free consultation today.

MillsWindow.com

Address

1860 Fenpark Drive
Fenton, MO
63026

Opening Hours

Monday 8am - 4pm
Tuesday 8am - 4pm
Wednesday 8am - 4pm
Thursday 8am - 4pm
Friday 8am - 4pm

Telephone

+13144297000

Website

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