What is the FG110F double inward-opening thermal break window?First, understand its product positioning.
The FG110F double inward-opening thermal break window can be broken down into three layers of information from its name:FG110F is the series code, double inward-opening is the opening method, and thermal break window is the structural type.Together, it is an aluminum alloy window with a frame width of 110mm, a thermal break insulation structure, and sashes that open toward the interior.
For contractors and procurement parties, the key to understanding this product positioning is not memorizing the code, but figuring out what problems it solves:Double inward-opening means both sashes open toward the interior, requiring no outdoor operation, making it suitable for exterior window maintenance in multi-story and high-rise buildings;The thermal break structure involves adding insulation strips in the middle of the aluminum profiles to cut off the heat conduction path between indoors and outdoors.
Basic Definition and Core Structure of FG110F Double Inward-Opening Thermal Break Window
The core structure of FG110F consists of three parts:
- Aluminum alloy main frame: It bears the overall load, with a frame width of 110mm, belonging to the medium-width series, balancing profile strength and glass installation space.
- Thermal break strip: The PA66 thermal break strip embedded in the aluminum profile separates the indoor and outdoor aluminum sections, reducing the overall heat transfer coefficient of the window.
- Double inward-opening sashes: Both sashes open inward, and with the multi-point locking system, the sealing strips are compressed to achieve airtightness.
The practical significance of this structural combination is:It addresses both the needs of "thermal insulation" and "easy maintenance" in a single product.Compared to single inward opening, double inward opening allows cleaning the outer glass or replacing the weatherstripping without leaning out of the building, which is more friendly for property maintenance and residential safety.
What does 6063-T5 aluminum alloy profile with 2.0mm wall thickness mean?
6063-T5 is the grade and temper designation of aluminum alloy.。 6063 is an aluminum-magnesium-silicon alloy, widely used for building door and window profiles;T5 indicates that after high-temperature extrusion, rapid cooling, and then artificial aging treatment, the material achieves stable mechanical properties. In simple terms,This is a mature standard material for architectural aluminum profiles, not a special or scarce material. Its advantages lie in good extrusion formability and strong adaptability to surface treatment.—Whether it is anodizing, powder coating, or wood grain transfer, uniform adhesion can be achieved.
What level does a 2.0mm wall thickness represent? In architectural door and window profiles, wall thickness directly determines the rigidity and wind pressure resistance of the profile. Currently, the wall thickness of common residential door and window profiles on the market is mostly between 1.4mm and 1.8mm.2.0mm falls into the thicker category,meaning the profile is sturdier and more resistant to deformation, suitable for high-rise buildings with high wind pressure or large-size window sashes.
However, it should also be noted that increased wall thickness brings two costs: first, the profile weight increases, requiring higher load-bearing capacity of hardware and installation precision;Second, the aluminum usage per unit area increases, and the cost rises accordingly.
Therefore,a 2.0mm wall thickness is not a simple logic of "the thicker, the better," but a matching logic of "choose a thicker wall when higher strength is needed."。 If your project is an ordinary multi-story residential building with small window sash sizes, 1.6mm or 1.8mm may already be sufficient;if it is a high-rise, large-panel, or coastal area with high wind pressure, 2.0mm is a more reliable choice.
Next step for confirmation: Provide the Haipaisi Chuang team with your project's floor height, maximum window sash panel size, and the local basic wind pressure value to confirm whether a 2.0mm wall thickness is necessary under your specific working conditions, and whether costs can be optimized by adjusting the panel sizes.
Four core differences between FG110F and ordinary thermal break windows: profiles, sealing, customization, and cost.
When comparing the FG110F with ordinary thermal break windows side by side, the differences that truly affect your selection are concentrated in four dimensions: profile material, sealing structure, customization flexibility, and cost logic. Below, we break down each item, and each one is tied to its decision-making implications.
Profile Material and Wall Thickness: Differences Between 6063-T5 and Ordinary Profiles
The FG110F uses 6063-T5 aluminum alloy profiles with a reference wall thickness of 2.0mm. Ordinary thermal break windows commonly use 6063-T5 or lower-grade 6060-T5, with wall thicknesses typically 1.4mm or 1.6mm.
The decision-making implication here is not "thicker is better," but ratherwall thickness determines whether you can meet project acceptance standards.。 Domestic engineering standards have minimum requirements for main profile wall thickness (usually not less than 1.4mm), but for high-rise buildings, areas with high wind pressure, or large-panel window sashes, a 2.0mm wall thickness provides better resistance to wind pressure deformation. If your project is an ordinary low-rise residential building, 1.4mm may be sufficient;for commercial projects, high-rise buildings, or large window sizes, 2.0mm is a more reliable choice.
Sealing design and inward-opening structure: why double inward-opening is better for sealing
The FG110F features a double inward-opening structure—both sashes open inward. Common thermal break windows typically have single inward-opening, outward-opening, or sliding configurations.
The core advantage of double inward-opening lies inthe continuous closure of the sealing gasket。 When closed, the sealing gasket of an inward-opening window is pressed against the frame, forming a continuous sealing surface;The sealing effect of the pile strip on sliding windows is far inferior to the compression sealing of rubber strips. A double inward-opening window has one more operable sash area than a single inward-opening window, but both sashes use the same compression sealing logic, resulting in more uniform overall air tightness.
Decision implication: If what you need issound insulation and noise reduction, or thermal insulation and energy saving, the double inward-opening window has a clear advantage over the sliding window, and offers more flexibility in ventilation area compared to the single inward-opening window. However, note that inward-opening windows occupy indoor space, and tall furniture cannot be placed in front of the windowsill—this must be confirmed during the model room stage.
Customization capability: Can the wall thickness and glass configuration be adjusted?
The FG110F supports customization according to drawings, and both the wall thickness and glass configuration can be adjusted. The reference configuration is 2.0mm profile + 5+27A+5 insulating glass, but this is only the baseline solution.
In actual decision-making, you need to confirm three things:
- Wall thickness selection: What is the wind pressure load in the region where the project is located?Is it necessary to increase the thickness to above 2.0mm?
- Glass configuration: For street-facing projects, laminated insulating glass (such as 5+1.14PVB+5+12A+5) may be needed for noise reduction;In cold regions, Low-E coating may be needed for thermal insulation.The 27A air layer of 5+27A+5 is already relatively large, offering good thermal insulation performance, but the sound insulation effect depends on the glass combination rather than simply the thickness of the air layer.
- Grid dimensions: 1000×1000mm is a reference size; in actual projects, the window grid layout, opening method, and the combination of fixed and operable sashes need to be confirmed according to the drawings.
Cost logic: the difference lies not in unit price but in overall cost
The profile usage and hardware complexity of FG110F are higher than those of ordinary single inward-opening broken-bridge windows, so the unit price per square meter will be higher. However, when making a decision, you need to calculate the full picture:
- Installation cost: The installation difficulty of double inward-opening windows is similar to that of single inward-opening windows, and it will not significantly increase labor costs.
- Maintenance cost: Inward-opening windows are easier to clean from the indoor side and facilitate hardware maintenance, which is more convenient than outward-opening windows in the long run.
- Performance compliance cost: If the project has clear acceptance requirements for air tightness, sound insulation, or thermal insulation, ordinary thermal break windows may require additional sealing strips or upgraded glass to meet the standards. This hidden cost is often overlooked.
Situations suitable for choosing FG110F: The project has explicit requirements for sound insulation, thermal insulation, or air tightness, and the indoor space allows for inward opening;Need to batch order with unified specifications, and proceed with orders after sample confirmation.
Situations not suitable: The project budget is extremely sensitive, there is no requirement for sealing performance, or the interior space at the window sill is tight and cannot accommodate inward-opening windows.
Next step suggestion: Organize the four pieces of information—project location, floor height, window type and grid dimensions, and whether it faces the street—and confirm the wall thickness selection and glass configuration plan with the Hipeisichuang team before deciding whether to proceed with sampling.
Which projects are suitable for the FG110F double inward-opening thermal break window?The boundary between recommended and not recommended
To determine whether the FG110F double inward-opening thermal break window is suitable for your project, focus on three key points: the requirements for thermal insulation and soundproofing, whether the installation space allows inward opening, and whether the budget is willing to pay for performance.
Recommended scenarios: residential communities, street-facing residences, and cold northern regions
- Residential community projects: Residents have clear expectations for sealing and unified maintenance. The double inward-opening structure allows installation and subsequent maintenance to be completed indoors, without the need for ropes or scaffolding.
- Street-facing residences: The main pain point for street-facing projects is noise.The FG110F reference configuration uses 5+27A+5 insulating glass, combined with a thermal break structure, providing a physical foundation for sound insulation.If the project is near a main road or commercial area, this configuration is worth considering.
- Cold northern regions: The core value of the thermal break lies in winter insulation.The 2.0mm profile combined with the thermal break strip reduces heat transfer through the window frame, offering more obvious returns for projects sensitive to heating costs.
Scenarios not recommended: projects with space constraints, budget-sensitive projects
- Projects with limited space: Double inward-opening sashes open into the interior, occupying indoor space.For compact layouts, projects with furniture or cabinets near windows, or where inward opening affects curtain or air conditioning use, sliding windows or single inward-opening windows are more suitable.
- Budget-sensitive projects: The cost of double inward-opening thermal break windows is higher than that of ordinary sliding windows or single-glazed windows.For affordable housing, short-term transitional buildings, or projects with tight budgets, it is necessary to weigh whether the added complexity is worth it.
Budget allocation recommendations
If the FG110F is chosen, the budget priority should be:Glass configuration(The thickness of the hollow layer and whether it is Low-E) determine the actual sound insulation and thermal insulation effect, so priority should be given to ensuring this aspect; Secondly,the quality of hardware fittings, which determines the lifespan and daily experience of inward-opening windows; Finally,the wall thickness of the profile—if the floor is low and wind pressure is small, you can confirm with the manufacturer whether thinner profiles can be used to reduce costs. Customization costs need to be evaluated separately.
How to determine whether the FG110F is suitable for your project?3 things to confirm before selection
The value of the FG110F double inward-opening broken-bridge window is concentrated on three clear requirements: thermal insulation, sealing, and inward opening. Before selection, please confirm each item step by step according to the following steps.
Confirm the project conditions: whether the requirements for thermal insulation, sealing, and inward opening are clear
First, answer three questions:
- Is inward opening a rigid requirement? The double inward-opening sashes open toward the interior, occupying indoor space, but they facilitate glass cleaning.High-rise residential or street-facing buildings are suitable for inward opening;If the project has security grilles or a hard requirement for outward opening, the FG110F is not a match.
- How strong is the need for thermal insulation? The thermal break structure addresses the issue of heat transfer between indoors and outdoors.If the project is located in a hot-summer-cold-winter region or the owner is sensitive to energy consumption, the thermal break is a plus;In mild climate zones with a tight budget, the priority of the thermal break can be lowered.
- Are the sealing requirements clear? Double inward opening combined with multiple seals is superior to ordinary sliding windows in terms of sound insulation and dust prevention.If the project has no clear requirement for air tightness, this item will not be used as a basis for decision-making.
Situations where a conclusion can be drawn directly: If the project explicitly requires inward opening, has thermal insulation needs, and accepts the cost premium of thermal break windows—when all three conditions are met simultaneously, the FG110F is worth entering the sample confirmation stage.
Situations requiring further communication: If only "aluminum alloy windows" are specified, with the window type, opening method, and performance level undetermined. It is recommended to first organize the project location's climate, building floor height, and owner preferences, and then let the Qinhan System Doors and Windows team assist in the assessment.
Confirm customization requirements: wall thickness, glass configuration, and drawing customization
The FG110F reference profile thickness is 2.0mm, with a glass configuration of 5+27A+5 insulating glass. These two parameters determine the performance ceiling and directly affect cost.
- Wall thickness 2.0mm: A relatively solid configuration, suitable for large window sashes or high-rise buildings with strong wind pressure.For small window sashes in regular residential buildings, consider reducing wall thickness to control costs, but evaluate resistance to deformation.
- Glass configuration 5+27A+5: The 27A air gap is wider, providing better thermal and acoustic insulation than standard configurations.Suitable for projects facing streets or near subways;In quiet areas, consider reducing the air gap to control costs, but confirm whether it affects thermal performance.
Customization Process: FG110F supports customization according to drawings. Before placing an order, you need to prepare: window opening dimensions, opening method, glass configuration requirements, profile surface treatment, and hardware preferences. It is recommended to first make a sample of about 1 square meter (reference size 1000×1000mm), and confirm the profile texture, opening feel, and sealing effect before placing a bulk order.
Situations requiring further communication: For special-shaped windows, oversized dimensions, or special hardware integration, send the drawings and requirements to the Qinhan System Doors and Windows team, and confirm the profile structure and hardware compatibility before making a decision.
Frequently Asked Questions
Q1: Is FG110F suitable for sliding windows? No, it is not suitable. FG110F features a dual inward-opening structure, designed primarily for inward-opening operation.
For projects requiring sliding windows, please refer to other series.
Q2: Can the wall thickness be changed to 1.8mm or 1.4mm? FG110F has a reference wall thickness of 2.0mm, and custom adjustments are supported. However, reducing the wall thickness affects the profile's rigidity and wind load resistance; feasibility depends on window sash dimensions and floor height, requiring evaluation and confirmation by the team.
Q3: Can the glass configuration be changed to double laminated glass? This is open for discussion. 5+27A+5 is the reference configuration. If laminated glass is required (for safety or sound insulation), compatibility of the profile grooves and the impact of the entire window's weight on hardware load-bearing capacity need to be confirmed.
Q4: How long does sample confirmation take? It depends on production scheduling and the complexity of customization. Standard sizes are faster, while special surface treatments or non-standard glass will extend the lead time.
It is recommended to reserve time for sample confirmation before placing bulk orders.
Learn More
If your project is evaluating the suitability of double inward-opening thermal break windows, you are welcome to submit information such as project location, floor height, window grid dimensions, and whether it faces the street to the Qinhan System Doors and Windows team. We will assist in confirming wall thickness selection and glass configuration solutions, and arrange sample prototyping.
Related Products:FG110F Double Inward-Opening Thermal Break Window