The Medium-Narrow Frame Casement Door is a swing-style door system featuring a combination of a medium-narrow aluminum alloy frame and a glass door leaf. The door leaf opens and closes via side-mounted hinges, presenting a minimalist facade characterized by clean frame proportions. It serves versatile functions—acting as an interior passageway door, a decorative glass door, or a functional spatial divider—thereby meeting the architectural requirements of a space regarding natural lighting, accessibility, privacy, and visual harmony. This product is ideally suited for use in residential homes, apartments, hotels, office environments, and commercial partition openings.

| Item | Specification |
| Product Name | 40*65 Medium Slim Frame Swing Door |
| Keyword | Medium-Narrow Frame Casement Door |
| Frame Visible Width | 50mm |
| Sash Visible Width | 65mm |
| Profile Thickness | 1.4mm |
| Glass Configuration | 4mm+20A+4mm |
| Hardware | Custom Hardware |
| Opening Type | Left-Hand Inward Opening, Right-Hand Inward Opening, Left-Hand Outward Opening, Right-Hand Outward Opening |
| Optional Color | Grey, Champagne, Silky Black, Brown |
The 40*65 Medium Slim Frame Swing Door features a configuration with a 50mm visible frame face and a 65mm visible sash face, giving the door body a more substantial and balanced proportion. It is ideally suited for interior spaces with taller door openings and for defining functional zones. Compared to ultra-narrow frame doors, the 65mm sash profile offers a sharper, more distinct linear aesthetic, enhancing the door's visual presence. This makes it an excellent choice for high-end residential interiors, hotel guest rooms, and commercial spaces requiring standardized, large-scale installations.
The Medium-Narrow Frame Casement Door utilizes aluminum profiles with a 1.4mm wall thickness, making it suitable for use as interior swing doors and glass partitions. The lightweight aluminum frame facilitates high installation efficiency and ensures ease of daily operation. For areas such as bedrooms, studies, kitchens, walk-in closets, and office zones, this configuration effectively meets standard traffic requirements while helping projects manage material costs and minimize on-site construction complexity.
The 40*65 Medium Slim Frame Swing Door is fitted with 4mm + 20A + 4mm insulated glass, ensuring excellent natural light transmission even within partitioned spaces. The 20mm air gap (20A) within the insulated glass helps enhance spatial comfort, making it ideal for interior zones where a degree of sound insulation and thermal separation is desired. The glass finish—whether clear, frosted, textured, or otherwise—can be customized to meet specific project requirements.
The Medium-Narrow Frame Casement Door supports a variety of opening directions—including left-inward, right-inward, left-outward, and right-outward—allowing for flexible configuration based on the door opening's location, furniture layout, traffic flow, and project blueprints. Its swing mechanism ensures direct and effortless operation, making it well-suited for individual rooms, office areas, and commercial partitions. HEKIN offers project-specific manufacturing capabilities, allowing for full customization regarding dimensions, glass type, color finishes, and hardware solutions.
Available in sophisticated finishes such as Gray, Champagne, "Skin-Touch" Black, and Brown, the design complements a wide range of interior styles—from modern and "light luxury" to professional business environments and residential settings. The medium-narrow frame features clean, crisp lines; the door body avoids appearing overly heavy or bulky while maintaining a strong sense of decorative elegance. For model homes, hotels, apartments, and commercial developments, this minimalist aesthetic contributes to a cohesive interior design scheme and elevates the overall quality of the space.

Bedroom entrances require a balance between ease of passage, privacy, and spatial harmony. The 40*65 Medium Slim Frame Swing Door is suitable for doorways leading to master bedrooms, secondary bedrooms, and guest rooms. Its medium-narrow frame ratio creates cleaner, more defined lines, while the glass—available in frosted or textured finishes—allows natural light to filter through while minimizing visual transparency. This design is ideal for high-end residential interiors and apartment projects.
Study rooms demand a relatively private working environment while still maintaining a sense of brightness. This Medium-Narrow Frame Casement Door is perfect for home offices, reading rooms, and study entrances. The 4mm+20A+4mm insulated glass configuration enhances spatial separation, while frame finishes in gray, champagne, or "skin-black" can be seamlessly coordinated with bookshelves, wood paneling, and modern lighting designs.
Kitchen doors serve to isolate cooking fumes and odors while maintaining a visual and lighting connection between the dining area and the kitchen. The 40*65 Medium Slim Frame Swing Door is suitable for semi-open kitchens, Western-style kitchen zones, and transitional doorways between the dining and cooking areas. Its swing-door structure facilitates easy daily access, and the glass surface is easy to clean, making it an excellent choice for modern residential homes and model home projects.
Hotel guest rooms place high demands on door aesthetics, operational convenience, and maintenance efficiency. This Medium-Narrow Frame Casement Door is suitable for suite partitions, walk-in closet entrances, dry-area bathroom doors, and lounge doorways. The insulated glass configuration adds depth and layering to the space, while custom hardware options facilitate streamlined procurement and long-term management for hospitality projects—making it ideal for boutique hotels and guesthouses.
Commercial offices require clear spatial zoning and a sleek, professional aesthetic. The 40*65 Medium Slim Frame Swing Door is suitable for entrances to manager's offices, consultation rooms, conference rooms, and showrooms. With a 50mm frame face paired with a 65mm door sash, the design features a highly organized and structured visual rhythm; available in gray or "skin-black" finishes, it integrates effortlessly into modern office interiors and is well-suited for large-scale commercial projects.


