Harpeth · Windows & Doors
Harpeth bi-fold door fully open to Tennessee hills at sunset

Premium Aluminum · 2026 Collection · Nashville, Tennessee

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6063‑T5
Aluminum alloy frames
17
Standard finishes + custom RAL
3‑Year
Warranty included
No MOQ
Single-project orders welcome

Our Standard

Aluminum, held to a higher standard.

Harpeth Windows & Doors is a curated line of premium aluminum fenestration, specified by designers and installed by licensed builders. Every product is selected for the way the best homes are designed and built: clean sightlines, thermal performance, and finishes that hold up to real weather.

All products use 6063-T5 aluminum alloy frames with insulated tempered glazing. Thermal-break profiles are available on the sliding, hung, multi-slide, and bi-fold lines. Seventeen standard finishes, custom RAL matching, and multiple hardware tiers give you control over every detail.

We are not a showroom. We are designers and builders who specify these products for our own projects, then make them available to yours.

Floor-to-ceiling sliding glass wall at dusk
Casement windows opened to a courtyard, integrated screen panel

Product Line

Windows

Six lines. One standard of build.

Every Harpeth line is named for the places around the Harpeth River that shaped how we build.

Black casement windows over a kitchen sink, one sash cranked open
Casement pair, Matte Black

Cumberland

Casement · Outswing · side-hinged

The workhorse of modern residential design. Outswing casements give full ventilation and an unobstructed view when closed. Three profile depths match performance to budget.

SeriesProfileGlazingAlu ThicknessNotes
50 SeriesSignature50mmSingle / 5+12A+5mm insulated tempered1.4 / 1.6mmMost specified
55 Series55mmSingle / 5+12A+5mm insulated tempered1.4 / 1.8mmWider profile, added rigidity
108 Series108mm5+27A+5mm insulated tempered w/ SS mesh1.4 / 1.6 / 2.0mmStainless steel security mesh glazing option.
Ribbon of awning windows kicked open above a freestanding tub
Awning ribbon, clerestory placement

Radnor

Awning · Top-hinged · outswing

Top-hinged for weather-resistant ventilation. Awning windows stay open in light rain and pair well with fixed panes in larger compositions.

SeriesProfileGlazingAlu ThicknessFinish
50 Series50mm5+12A+5mm insulated tempered1.4 / 1.6mmPowder / PVDF
55 Series55mm5+12A+5mm insulated tempered1.4 / 1.8mmPowder / PVDF
108 Series108mm5+27A+5mm insulated tempered1.4 / 1.6 / 2.0mmOptional screen/grille.
Tilt and turn window tilted open at the top, Matte Black
Tilt position, Matte Black

Mercer

Tilt & Turn · Dual-action · inswing

European-style dual operation: tilt inward at the top for secure ventilation, or turn fully inward for easy cleaning and maximum airflow.

SeriesProfileGlazingAlu ThicknessFinish
50 Series50mm5+12A+5mm insulated tempered1.4 / 1.6mmPowder / PVDF
55 Series55mm5+12A+5mm insulated tempered1.4 / 1.8mmPowder / PVDF
108 Series108mm5+27A+5mm insulated tempered1.4 / 1.6 / 2.0mmOptional screen/grille.
Row of black sliding windows above a kitchen counter, one panel half open
Sliding ribbon, one panel open

Natchez

Sliding · Horizontal glide

Horizontal sliders suit wide openings where swing clearance is limited. Both series offer thermal break and non-thermal break profiles.

SeriesProfileGlazingAlu ThicknessNotes
80 SeriesSignature80mm5+12A+5mm insulated tempered1.4 / 1.6mmThermal / non-thermal break
126 Series126mm5+12A+5mm insulated tempered1.4 / 1.6mmThermal / non-thermal break
Double hung window pair with bottom sashes raised, mountain view
Double hung, bottom sash raised

Rutledge

Hung · Single or double · vertical slide

Traditional vertical-sliding operation in a modern aluminum frame. Single hung (bottom sash moves) or double hung (both sashes move). Covey USA balance hardware standard.

SeriesProfileGlazingAlu ThicknessHardware
83 SeriesSignature83mm5+12A+5mm insulated tempered1.4 / 1.6mmCovey USA
Glass louver window with blades open for ventilation
Glass louver, blades open

Kingston

Louver · Fixed or operable blades

Adjustable aluminum or glass louver blades for controlled ventilation and privacy. The glass louver variant adds daylight while maintaining airflow.

SeriesProfileMaterialBladeStyle
50 Series50mmAluminum1.1mmFixed / close-open
100 Series100mmAluminum1.1mmFixed / close-open
100 Series Glass100mm6mm tempered glass2.0mm alu frameGlass louver
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Black aluminum bi-fold doors folded open to a covered brick porch

Product Line

Doors

From entry doors to entire walls of glass.

Casement door French pair opening from a limestone patio at golden hour
50 Series French pair

Franklin

Casement Door · Hinged · single or French pair

Hinged aluminum doors for entries, patios, and interior transitions. Single leaf or French-pair configurations. The 108 Series supports the widest openings.

SeriesProfileGlazingAlu ThicknessNotes
50 SeriesSignature50mm5+12A+5mm insulated tempered1.4 / 1.6mmMost specified
55 Series55mm5+12A+5mm insulated tempered1.4 / 1.8mm
108 Series108mm5+27A+5mm insulated tempered1.4 / 1.6 / 2.0mmWidest profile. Electronic lock option.
Multi-slide door fully open to a pool at dusk
Multi-slide fully open at dusk

Riverbend

Multi-Slide Door · Multi-track · floor-to-ceiling capable

Large-format sliders for living rooms, great rooms, and indoor-outdoor transitions. Profiles from 120mm to 202mm cover standard patio doors through panoramic walls of glass.

SeriesProfileGlazingAlu ThicknessNotes
120 Series120mm5+12A+5mm insulated tempered1.6 / 2.0 / 1.8mmThermal / non-thermal break
190 Series190mm5+12A+5mm insulated tempered1.6 / 2.0 / 1.8mmHeavy-duty track, oversized panels
132/202 SeriesSignature132 / 202mm5+12A+5mm insulated tempered1.6 / 2.0mmThermal / non-thermal break
White bi-fold door folding open from a farmhouse kitchen to a porch
70 Series double panel, Smooth White

Bellevue

Bi-Fold Door · Folding panels · open-corner capable

Folding panel systems that stack to one side, opening entire walls to the outdoors. The signature product for indoor-outdoor living. Both series use 27mm insulated glazing.

SeriesProfileGlazingAlu ThicknessPanel Style
75 Series75mm5+27A+5mm insulated tempered1.8mmSingle panel
70 SeriesSignature70mm5+27A+5mm insulated tempered1.8mmDouble panel
Slim frame casement door with sidelites opening to a palm garden
16 Series casement with sidelites

Sylvan

Slim Frame Interior · 16mm profile · near-invisible sightlines

A 16mm frame profile for near-invisible sightlines. Designed for room dividers, closets, pantries, interior glass walls, and steel-look French doors. Available with laminated safety glass.

TypeProfileGlazing OptionsAlu ThicknessApplication
16 Series Sliding16mm8mm single / 5+6A+5mm / 5+6A+9A+5mm insulated / 4+0.76pvb+4mm laminated2.0mmInterior sliding partitions
16 Series Casement16mmSame options as sliding2.0mmInterior French doors
Structural glass curtain wall on a commercial building at dusk
Structural curtain wall, commercial

Capitol

Glass Curtain Wall · Commercial · fully custom

Structural glass curtain wall systems for commercial buildings and large-scale residential projects. Fully custom engineering: glass thickness, aluminum profile, and structural calculations are project-specific.

Powder-coated aluminum nailing fin is also available for all window series, integrating with rough opening, builder’s felt, and waterproof membrane per standard framing practice.

Contact us for custom quotation.

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Specification

Materials & Finishes

All frames use 6063-T5 aluminum alloy, selected for strength-to-weight ratio, corrosion resistance, and finish quality. Profiles are available in thermal break (polyamide insulation strip) and non-thermal break configurations.

Powder coating is standard on all products: durable, UV-resistant, in all 17 standard colors and custom RAL. PVDF coating is the premium fluoropolymer upgrade for coastal or high-UV environments, available on awning, tilt-turn, casement door, and sliding door series.

Solid finishes

Smooth White
YH-MYT-14516
Matte Black
YH-180630
Sand Black
YH-180632
Satin Brown
YH-JZ-04
Sand Grey
YH-PT-271
Platinum Gold
YH-200524
Sandal Wood
YH-PLH5-51
Galaxy Dark Brown
YH-22189
Slate Grey
YH-180607
Fluorine Titanium Gray
YH-200542
Galaxy Grey
YH-22203

Woodgrain finishes

American Rosewood
YH-JZ-19
Golden Beech
YH-HM-1498
Golden Oak
YH-JZ-22
Forest Wood Grain
YH-200509
White Oak Wood Grain
YH-JZ-15
Teak Wood Grain
YH-MYT-14151

Custom RAL and wood-effect colours available on request.

Specification

Glass Performance

All glazing is tempered safety glass. Nine glass types are available across the line: tempered, single, insulated double, tinted, reflective, laminated, Low-E, frosted, and curved (arc).

Low-E coatings work differently by season. In summer the coating reflects solar heat outward, keeping interiors cooler. In winter it reflects interior radiant heat back inside, reducing heating loss. We recommend Low-E insulated glazing for all exterior applications in mixed climates like Middle Tennessee.

Glass Performance Data

ModelGlass TypeVLT %U-Value Winter (W/m²·K)Shading FactorG-Value
XETN1805XETN180#2+6A+5C732.500.670.59
XETN1806XETN180#2+9A+6C722.040.650.57
XETN1806XETN180#2+12A+6C721.850.650.56
XETN1808XETN180#2+12A+8C711.830.640.55
XETN18010XETN180#2+12A+10C691.820.610.53
XETS1405XETS140#2+6A+5C362.470.370.32
XETS1406XETS140#2+9A+6C362.000.350.30
XETS1406XETS140#2+12A+6C361.800.340.30
XETS1408XETS140#2+12A+8C351.780.340.29
XETS14010XETS140#2+12A+10C341.770.330.28
XETS1505XETS150#2+6A+5C452.440.410.36
XETS1506XETS150#2+9A+6C441.970.400.34
XETS150Recommended6XETS150#2+12A+6C441.760.390.34
XETS1508XETS150#2+12A+8C441.750.390.33
XETS15010XETS150#2+12A+10C431.740.370.32
XETS1605XETS160#2+6A+5C542.470.470.41
XETS1606XETS160#2+9A+6C532.000.450.39
XETS1606XETS160#2+12A+6C531.800.450.39
XETS1608XETS160#2+12A+8C521.790.440.38
XETS16010XETS160#2+12A+10C511.770.430.37
XETG1505XETG150#2+6A+5C452.480.430.38
XETG1506XETG150#2+9A+6C442.020.410.36

Calculated values for representative glazing configurations, computed with LBNL WINDOW 5.2 to ISO 9050:2003 and JGJ/T 151-2008 conditions. Values describe glass configurations, not specific window series. Project-specific performance is quoted per order.

VLT = Visible Light Transmittance. G-value = Solar Heat Gain Coefficient equivalent.

Hardware

Hardware tiers are matched to product type and performance requirements. Upgrades can be specified at order time. Electronic lock option available for 108 Series casement doors.

BrandProducts CoveredComponents
StandardAll window types, sliding doors, bi-fold doorsHandles, hinges, locks, pulleys, transmission boxes
SciliaCasement doors, handles, locksHandles, locks, casement door accessories
NotoTilt-turn windows, casement doorsHinges, handles, transmission boxes, accessories
German HoboCasement doorsHandles, casement door handles
Covey USAHung windows (83 Series)Balance system, locks, lifts

Installed

Project Gallery

Our window and door systems are installed in residential and commercial projects across the Americas, the Caribbean, Canada, and Australia.

Modern residence with corner glazing at dusk
Private residence — corner glazing and awning windows
Multi-family residential complex at dusk
Multi-family residential — Australia
Glass mid-rise residential building
Urban mid-rise — floor-to-ceiling systems
Modern townhouse development at dusk
Townhouse development — corner windows and sliders

Additional installations: Turks & Caicos luxury residential, Toronto office building, Cayman Islands townhouses, Canadian rental apartments and duplexes, Jamaica multi-family.

White modern farmhouse at dusk with black windows glowing warm

Coming Home

Now specifying in Nashville.

Harpeth products are being specified on upcoming Middle Tennessee design-build projects. Contact us to see the line in person once local installations are complete.

Get Started

Request a Quote

Send your window and door schedule, or reach out to discuss your project. Lead times vary by product and finish; standard colors ship faster than custom RAL. No minimum order quantity. Mixed-container shipping available for multi-product orders. All products carry a 3-year warranty.

Request a Quote

info@harpethwindows.com

Sales OfficesLocation
Los AngelesPacific Design Center, Los Angeles, California
NashvilleNashville, Tennessee