Duncan's Window & Door

Duncan's Window & Door Duncan’s Window and Door installs high quality replacement windows and doors using only in house craftsmen, never subcontractors.
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We deliver honest guidance, lasting craftsmanship, and stand behind every project. Proud to serve the World’s Best Customers.

09/04/2026

🚨 TODAY IS THE DAY! 🚨

🥩 4 POUNDS OF Beck's Meat Processing FOR THE PRICE OF 2 POUNDS!

You buy 2 pounds and Duncan’s Window & Door buys your NEXT 2 POUNDS!

MIX & MATCH: Wieners, brats and ground beef!
Available at all 3 Beck’s locations:
📍 Oshkosh Main Street
📍 Oshkosh Clairville Road
📍 Kaukauna, Wisconsin
YOU GET 4 POUNDS. YOU ONLY PAY FOR 2. DUNCAN’S PICKS UP THE REST!

From Duncan’s Window & Door, home of the NO GIMMICKS approach where you get a TRUE QUOTE from the start.

Share this with a neighbor and go get some meat!

THE BIG ANNOUNCEMENT IS HERE.This Labor Day weekend, Duncan’s Window & Door is teaming up with Beck’s Meats to give back...
09/03/2026

THE BIG ANNOUNCEMENT IS HERE.

This Labor Day weekend, Duncan’s Window & Door is teaming up with Beck’s Meats to give back to the communities we call home.

Buy 2 pounds of Beck’s brats, wieners or ground beef and Duncan’s will pay for your other 2 pounds.
That’s 4 pounds of meat for the price of 2.
September 4th and 5th
First 20 customers at EACH location
Oshkosh Clairville Road
Oshkosh Main Street
Kaukauna

No window purchase required. No sales gimmick.
Just two local businesses saying THANK YOU to the communities that support us.We live here. We work here. We serve here. Know a neighbor who could use 4 pounds of meat for the price of 2?
SHARE THIS WITH A NEIGHBOR.

TWO LOCAL COMPANIES. ONE BIG SURPRISE.Duncan’s Window & Door & Beck's Meat ProcessingBuilt around something we both beli...
09/02/2026

TWO LOCAL COMPANIES. ONE BIG SURPRISE.
Duncan’s Window & Door & Beck's Meat Processing
Built around something we both believe in: taking care of our community.

Full announcement coming soon.

TWO LOCAL COMPANIES. ONE BIG SURPRISE.Duncan’s Window & Door & Beck's Meat ProcessingBuilt around something we both beli...
08/29/2026

TWO LOCAL COMPANIES. ONE BIG SURPRISE.
Duncan’s Window & Door & Beck's Meat Processing
Built around something we both believe in: taking care of our community. Full announcement coming soon.

CHECK OUT THESE BLACK ON BLACK WINDOWS!There is just something about black on black that completely changes the look of ...
08/26/2026

CHECK OUT THESE BLACK ON BLACK WINDOWS!
There is just something about black on black that completely changes the look of a home.

And these weren’t just replacement windows.
Our W-2 Duncan’s Window & Door craftsmen installed all new jambs and casing on the interior, then finished the exterior with Diamond Kote trim for a clean, finished look from every angle.

No subcontractors. No passing the buck. Just our team from start to finish.What do you think of the black on black look?Would you put these in your home? Let us know below!⬇️

08/20/2026

🚨 SPOT DUNCAN’S. SNAP IT. TAG US. GET $20!

See Duncan’s Window & Door out in the wild? 👀📸
SNAP a pic. TAG us. GET rewarded. 🎉 Tag Duncan’s Window & Door with a comment of your photo and we’ll send you a $20 Kwik Trip gift card! ⛽💳

Keep your eyes peeled-you never know where you’ll spot us next! 👀

🚨 SPOTTED IN THE WILD! 🚨 Someone caught Duncan’s Window & Door out in the wild yesterday! 👀📸Remember: See us. Snap us. T...
08/19/2026

🚨 SPOTTED IN THE WILD! 🚨

Someone caught Duncan’s Window & Door out in the wild yesterday! 👀📸

Remember: See us. Snap us. Tag us.
Do all three and we’ll send you a $20 Kwik Trip gift card! ⛽🎉

Keep those eyes peeled-you never know where we’ll show up next! 👀

A customer recently shared something about our reviews that really stood out to us.She noticed that our reviews are subs...
08/17/2026

A customer recently shared something about our reviews that really stood out to us.
She noticed that our reviews are substantially different from those of many other window and door companies. Our customers do not just talk about their new windows and doors. They talk about the people who made the experience exceptional.
They mention the relationships they build with our installers, Troy, Paul, Caleb, Dane, and Ben. They praise Jeremy and Al and the sales process. They also recognize our customer care team and the support they receive throughout their project.
That is what makes Duncan’s Window & Door different.

We believe a great window and door experience is about more than the products. It is about quality craftsmanship, clear communication, and a team that genuinely cares about your home and your experience. Winter is only a few months away, so now is a great time to get your windows on order before the snow starts flying.

Contact us today to get your project started.920-267-3440

Thank you to Lightning Structural Steel. For the great work on this trailer rebuild. ✅️Replaced the worn out Grey outsid...
08/11/2026

Thank you to Lightning Structural Steel. For the great work on this trailer rebuild.

✅️Replaced the worn out Grey outside aluminum skin.

✅️ Repaired structural framing.

✅️Replaced bearing, bushings and brakes.

✅️Checked and replaced all wiring and lights as necessary.

This is our oldest trailer and has been servicing the world's best customers since day 1!

Now it is looking sharp again and ready for many more years of service. Now its off to Image 360, Inc. For the finishing touches!

🏠 HELP US SETTLE THIS DEBATE! 🖤🤍Same house. Same style. One big decision…🖤 BLACK WINDOWSor🤍 WHITE WINDOWS?Which one are ...
08/11/2026

🏠 HELP US SETTLE THIS DEBATE! 🖤🤍
Same house. Same style. One big decision…

🖤 BLACK WINDOWS
or
🤍 WHITE WINDOWS?

Which one are you choosing for your home?
Comment 🖤 for BLACK or 🤍 for WHITE!
Let’s see which one wins! 👇

Duncan's Window & Door

Address

3225 Clairville Road
Oshkosh, WI
54904

Telephone

+19202673440

Website

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