400 Series Windows in Dallas–Fort Worth
Andersen 400 Series windows: a warm wood interior paired with protective exterior cladding, so the look is traditional inside with almost nothing to maintain outside. The line most of our customers land on.
- 40+Years in Business
- 15,000+Projects Completed
- 1984Family-Owned Since
- 90DFW Cities Served


What do you get with Longhorn’s 400 Series Windows?
It is the Andersen line for homes where the windows need to match wood trim inside, without taking on the upkeep of a wood exterior in Texas sun.
Among the Andersen lines, the 400 Series sits between the 100 Series (composite frame, no wood inside) and the A and E Series (more style and color range, higher cost). For most brick homes in Dallas, Collin, Denton and Tarrant counties it gives the best balance of looks, durability and price, which is why so many customers end up here.
- Real wood interior you can stain or paint to match your trim
- Protective exterior cladding stands up to sun and storms
- Wide range of standard sizes and styles
How are 400 Series Windows installed, priced and cared for?
It comes in the common styles: double-hung, casement, awning, gliding and picture units, so one line can cover the whole house.
A 400 Series install adds one step the 100 Series doesn’t have: the wood interior. We remove the old window, check the opening for rot and square, set and flash the new unit, then fit the interior trim so it lines up with the wood frame. If you ordered unfinished interiors, the wood gets stained or painted after we’re done, and we’ll talk through who does that and when so the finish isn’t rushed.
With the 400 Series, cost follows the number and size of openings, the mix of styles (a house of casements prices differently from one of double-hungs), interior finish (prefinished or bare wood), exterior color, glass and grille options. Hidden rot in the framing is the other variable, and we price it separately when we find it.

400 Series Windows: common questions
The 400 Series is wood inside, vinyl-clad outside: you get a paintable or stainable interior that matches trim, with a weatherproof exterior that never needs painting. In DFW the cladding is doing the real work, and the wood stays on the conditioned, indoor side.
Most homes are done in one to two days once the custom windows arrive. Lead time on the windows themselves is typically a few weeks, because every unit is built to your openings.
Customers regularly report noticeably lower summer cooling costs and a quieter house. Savings depend on what you’re replacing. Single-pane aluminum windows show the biggest change.
Yes. Where your city requires one, we file it and deal with the inspection.
The wood needs a finish to protect it. You can order it prefinished or have it stained or painted to match your trim. We’ll talk through which makes sense for your rooms.
Wash it with mild soap and water, keep the weep holes clear, and check the caulk line around the frame once a year. The cladding does not need paint.

Before You Commit to 400 Series Windows
- Decide how the wood is finished. The interior is real wood, so choose the stain or paint to match your trim, and whether it arrives prefinished or is finished on site.
- Pick the operating style room by room. Double-hung suits traditional elevations; casements open fully for air and seal tightly when closed. One house can use both.
- Match the grilles to the elevation. Grille patterns change how a window reads from the street, so they follow the style of the house rather than a single default.
How does a 400 Series window project run?
- 1
A free measure and quote
Every opening is measured individually, because a house rarely has two identical ones. You see the series options side by side and get a firm price.
- 2
Built to your openings
Andersen builds the units to those measurements, so the installers are not shimming a stock size into a hole it does not fit.
- 3
Installed and sealed
Our own crews set, flash and seal each unit, then trim inside and out. Most homes are done in a day or two rather than a week.
- 4
Walkthrough and warranty
We check operation and locks on every window with you, clean up, and hand over the manufacturer warranty alongside ours on the installation.
Reading on 400 Series Windows
Practical notes on your home in North Texas.
Recent siding and window projects
Other window options
Who builds your project
- Family-owned since 1984. Dallas–Fort Worth homeowners have hired Longhorn for four decades. The business is still family-owned.
- One team, start to finish. The person who measures your home and the crew that installs the work are both Longhorn's, on one schedule.
- In-house crews. The people who quote the job are the people who stand behind it.
- Permits and HOA handled. We draw the job, file the permit with your city and prepare what most HOAs ask for.
- One warranty. One company answers for the whole project, not a folder of separate contractors.
Free estimate on 400 Series Windows
We’ll come out, measure, talk through the options and give you a firm number. No obligation.
Call (214) 251-4928Get Your Free Estimate
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