WY-77 Heat Insulation Narrow Frame Push Out Casement Window

Color Options for the WY-77 Series Casement Window

DERCHI provides two color categories for this narrow casement window. Buyers can select from PVDF custom finishes or standard Stock Colors based on project requirements and environmental exposure.

PVDF Custom Finishes

PVDF stands for polyvinylidene fluoride. This fluorocarbon coating bonds to aluminum surfaces through a multi-layer baking process. It resists UV degradation, salt spray, and acid rain. Two PVDF colors are available for this push out casement window:

 Retro Green

 Mint Gold

PVDF finishes are recommended for buildings in coastal, tropical, or high-altitude regions where surface degradation occurs faster.

Stock Colors

Ten standard colors ship without added production time. The range covers solid tones and wood-grain textures:

 Huanghua Pear (wood grain)

 Black Skin

 Deep Coffee

 Black Crystal Stone

 Pearl White

 Deep Sea Blue

 Caramel Coffee

 Quartz Gray

 Starry Sky Black

 Black Walnut (wood grain)

Stock Colors use powder coating, which provides consistent coverage and meets standard durability requirements for most residential and commercial installations.

Selection Guide

Solid colors like Pearl White and Quartz Gray pair with modern architectural styles. Wood-grain options such as Huanghua Pear and Black Walnut replicate natural timber appearance on narrow frame casement windows without the maintenance wood requires. For heat insulation window systems exposed to extreme weather, PVDF finishes deliver measurably longer color retention than standard powder coatings.

Opening Styles for the WY-77 Series Casement Window

DERCHI provides two opening configurations for this narrow casement window. Each configuration addresses specific ventilation, weather, and space requirements in residential and commercial buildings.

Awning Opening

The sash attaches to the top of the frame through hinges. The bottom edge pushes outward at an angle. This creates a canopy effect that allows airflow while deflecting rain away from the interior.

Awning windows are used in spaces where ventilation must continue during rainfall. Common installations include kitchens, bathrooms, and basement-level rooms. The partially open position also limits unauthorized access from outside, which adds a layer of security for ground-floor applications.

Outward Opening (Push Out Casement)

The sash is hinged along one vertical side and swings fully outward. This push out casement window delivers the largest possible opening area relative to the frame size, which increases air exchange rate.

The outward swing path keeps interior space completely clear. Curtains, blinds, and furniture near the window remain unobstructed during operation. This configuration is standard for living areas, bedrooms, and office spaces.

How to Decide

Select awning for rain-resistant ventilation in wet climates. Select outward opening for maximum airflow and unobstructed interior use. Both options retain the thermal performance built into the heat insulation window structure of the WY-77 series.

Glass Configuration for the WY-77 Series Casement Window

DERCHI provides eight glass configurations for this narrow casement window. Options are grouped into three categories: energy and light control, safety and protection, and insulation structure. Selection depends on climate zone, building code, and site-specific exposure.

Energy and Light Control

Low-E Glass carries a metallic oxide layer that reflects infrared radiation. It limits heat loss in cold months and heat gain in warm months, directly reducing the U-value of the heat insulation window unit.

Reflective Glass applies a metallic coating to the exterior surface. It rejects a high percentage of solar radiation and restricts inward visibility during daylight hours.

Tinted Glass integrates color agents during the glass manufacturing stage. It absorbs solar energy before transmission, which reduces glare and interior temperature gain.

Safety and Protection

Tempered Glass is processed through controlled thermal quenching. Its break pattern produces small granular pieces instead of jagged shards, meeting safety glazing standards.

Laminated Glass fuses two or more panes with a PVB or SGP interlayer. The interlayer holds fragments in place upon breakage and provides measurable sound dampening.

Bullet-proof Glass layers multiple glass sheets with reinforced interlayers to resist ballistic and forced-entry threats. It is specified for high-security installations.

Insulation Structure

Insulated Double Glass separates two panes with a sealed cavity filled with dry air or argon gas. This gap reduces conductive heat transfer and airborne sound transmission through the push out casement window.

Insulated Triple Glass introduces a third pane and a second sealed cavity. The added layer increases thermal resistance and noise reduction capacity, which serves buildings in cold regions or along high-traffic corridors.

Custom Styles for the WY-77 Series Casement Window

DERCHI manufactures ten frame configurations for this narrow casement window. Configurations fall into four categories based on opening shape and building application. Each category is engineered to fit specific architectural conditions.

Standard Styles

Single-sash and double-sash layouts handle standard rectangular openings. A single-sash unit fits bedrooms, studies, and bathrooms where one operable panel provides sufficient ventilation. A double-sash unit uses two hinged panels that open from the center, which increases airflow volume for mid-size openings.

Combination Styles

Combination units pair a fixed center pane with operable sashes on one or both sides. Transom panels above or fixed sections below can be integrated into the same frame assembly. The fixed center pane takes full advantage of the narrow frame casement window profile, maximizing unobstructed glass area. This configuration is specified for living rooms, primary bedrooms, and full-width balcony enclosures where both view and ventilation matter.

Sloped and Irregular Styles

Four configurations cover non-rectangular openings. Frame profiles include left-slope, right-slope, and stepped outlines that follow the roofline or wall angle. These solve installation challenges in attic spaces, stairwells, and angled roof structures where rectangular units cannot seal properly.

Polygonal Styles

A hexagonal frame structure supports bay window installations, sunroom walls, and custom facade designs. The center section contains double-opening sashes for airflow. This push out casement window option meets project requirements where geometric shapes define the architectural intent of the building envelope.