Mezzo® Energy-Efficient Vinyl Windows

Beauty Forged with Performance

Advanced energy efficiency meets stunning design. Strait Windows’ premium Mezzo® line features triple-pane glass options, cavity foam insulation, and innovative engineering to deliver maximum comfort and savings for St. Louis homeowners.

Call 314-WINDOWS Get Free Estimate

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The Mezzo Difference

Advanced engineering for superior performance

EdgeForce Frame

Low-profile frame and sash creates expanded glass area while internal chambers increase structural integrity and energy efficiency

CoreFX Reinforcement

Composite reinforcement reduces energy transfer while strengthening meeting rails for secure hardware mounting

Defense-Tek Locking

End-of-throw cam shift locking action delivers increased strength and protection

Gatekeeper Technology

Interlocking sash-to-sill technology delivers a unified wall of strength

HP3 Sill Dam

Telescoping sill dam protects from air and water infiltration while increasing structural stability

Forecaster System

Quickly directs water runoff, keeping exterior clean and attractive

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Enhanced Insulation

Cavity Foam Insulation Technology

Mezzo windows with enhanced cavity foam insulation provide greater thermal protection to keep your home warm in winter and cool in summer with less energy spending.

High-purity graphite granules in expanded polystyrene (EPS)
Silver-gray carbonized foam reflects radiant heat
Precision-contoured foam liners in select chambers
Lower U-factor means greater energy savings
Lower thermal conductivity improves insulation capacity

Ultimate Energy Efficiency

Triple-Pane, Ultra-Efficient Glass System

Further increase energy efficiency with triple-pane glass protection. This high-performance design features a 1" thick glass unit with three panes of glass, two surfaces of Low-E technology, and two spaces of argon gas.

3 Panes of GlassMaximum thermal protection

2 Low-E SurfacesHeat reflection technology

2 Argon Gas SpacesSuperior insulation between panes

Super Spacer® SystemStructural foam spacer for energy savings

Bonus benefits: Improved overall comfort and quieter indoor ambiance throughout your home.

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Insulated Glass Options

Four families of high-performance glass

Windows are roughly 80% glass, so choosing the ideal glass system for your home and climate is critical. All packages meet or exceed ENERGY STAR® requirements for the St. Louis climate zone.

Most Efficient

ClimaTech PriME

The ultimate in energy efficiency. Meets ENERGY STAR Most Efficient in all climate zones.

3 panes of glass
3 surfaces of Low-E technology
2 spaces of argon gas fill
2 warm-edge spacer systems

ClimaTech Elite

Advanced UV protection with virtually imperceptible metallic layers.

Vacuum-deposited metallic layers
Repels powerful UV rays
Protects furnishings from fading
Intercept Warm-Edge Spacer

ClimaTech Plus

Foam spacer system with UV-filtering glass and argon gas.

Low-E glass with UV filtering
Argon gas insulation
Foam Spacer System
Excellent year-round performance

ClimaTech

Proven performance combining Low-E glass, argon gas, and warm-edge spacer.

Low-E insulating glass
Argon gas fill
Intercept Warm-Edge Spacer
Reliable energy savings

Window Styles

Complete range of designs for every room

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Double-Hung Windows

Forever in Style

Refined and purposeful design stays true to classic style with cool, contemporary elegance. Both sashes tilt in for easy cleaning from inside your home.

Narrowline frame and fusion-welded corners for exceptional strength
Integrated sash-to-sill interlock provides unified wall of strength
Low-conductive composite reinforcement in meeting rails
True sloped sill for efficient drainage
Constant force balance system for smooth operation
Hidden screen track for clean appearance

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Sliding Windows

Simplicity and Ease

Visually sleek and deceptively strong with slim silhouette, ample glass area, and smooth gliding action. Sashes lift out for convenient cleaning.

Narrowline frame with fusion-welded corners
Multi-chambered construction creates airtight insulating compartments
Nylon-encased dual brass roller system for easy-glide performance
Low-conductive composite reinforcement improves energy efficiency
Hidden screen track for neat appearance

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Picture Windows

Sometimes Bold, Always Beautiful

Versatile design makes a statement of quality. Narrowline frame and full glass exposure offer unobstructed views with high-performance insulation.

Narrowline frame with fusion-welded corners
High-performance insulated glass with Super Spacer® system
Multi-chambered construction for thermal performance
Available special shapes: Circle Top, Arch, Eyebrow, Ellipse, Hexagon, Octagon, Pentagon, Cathedral, Triangle

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Casement Windows

The Pinnacle of Utility and Design

Old-world craftsmanship meets advanced technology. Low-profile nesting handle opens sash gently outward for maximum ventilation.

Beveled exterior sash for slimline appearance
Step-down frame with compression bulb seal
State-of-the-art hinge system for multi-directional ventilation
Positive crank mechanism for easy operation
Multi-point locking system for tight seal

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Awning Windows

Utility Meets Design

Opens up and out for refreshing airflow. Heavy-duty hinge system and dual locking ensure tight seal and easy operation.

Beveled exterior sash design
Heavy-duty hinge system
Dual locking system on each side
Combine with fixed lites for expanded design

FrameWorks® Color Collection

13 beautiful exterior color options

Cutting-edge polyurethane coating with heat-reflective pigments for remarkably strong, fade-resistant finish. 10-year fade-resistance warranty on painted colors.

White

Extruded Solid Color

Beige

Extruded Solid Color

Classic Clay

Extruded Solid Color

Black

Architectural Bronze

American Terra

Hudson Khaki

Desert Clay

Sand Dune

English Red

Forest Green

Silver

Castle Gray

Interior Options: White, Beige, White Woodgrain, and premium laminate finishes available.

We recommend making final color selections using actual product samples. Call 314-WINDOWS to request samples.

Decorative Options

Grid patterns, profiles, and specialty glass

Colonial Grille 3/4"

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Colonial Grille 1"

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Perimeter Pattern

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Prairie Style

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Double Prairie

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Victorian Pattern

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Simulated Divided Lite

Authentic appearance of true divided lites with modern energy efficiency. Contoured grids on interior and exterior with spacer bar between glass panes.

V-Grooved Glass

Elegant etched pattern creates visual interest and privacy while allowing natural light. Available in select styles and configurations.

Grid Profiles

Choose 3/4" or 1" contoured colonial grids in complementary colors and matching woodgrains to coordinate with your interior.

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Trimworks® Decorative Window Accents

Complete the look with custom exterior trim

Part of the Mezzo Full-Frame Replacement System, Trimworks delivers consistent beauty across all windows with SwiftLock® secure installation technology.

Flat Casing 3.5"

Contemporary clean lines

Flat Casing 4.5"

Modern wide profile

Brickmould 2"

Traditional depth and dimension

Custom-made to match each window perfectly
Available in all 13 exterior colors
Patented SwiftLock installation for secure fit
Laboratory tested to withstand high winds
More viewable glass by removing old frames entirely

Installation Excellence

Why choose full-frame replacement?

Completely removing the old window including its nail fin and installing a new integral nail fin window is the most reliable solution. This ensures proper flashing, water management, and a beautiful finished look.