NW Reinforced 847
Slim Aluminum Framed Folding Glass Door for Mid to High-Rise Buildings at Taller Heights
- Thermally broken system engineered to meet higher windload requirements of taller buildings
- DP of +/- 85 psf and CW55 rating
- Floor supported panels capable of heights up to 11′ 6″ (3500 mm)
Reinforced for Midrise and High-Rise Buildings
NW Reinforced 847 has been designed specifically for taller buildings where higher windload requirements and limits to deflection are needed. This system is certified and performance-rated to CW55.
Folding Glass Door for Vertical Living
For openings onto balconies, terraces, and rooftops, this reinforced accordion glass door opens wide to 90% or more and is not restricted as with a traditional slider.
Performance-Driven Architectural Solution for Demanding Environments
Designed for energy efficiency and strong weather performance, this thermally broken system provides exceptional protection from outside elements and delivers comfort and security when closed.
NW Reinforced 847 is the only floor supported, thermally broken folding system available that allows for larger opening sizes and flexible space management with the integration of one FourFold or SixFold Panel Set. These panel sets can move and stack either to the right, left, or center within the same track allowing the panels to be stacked in the most convenient location as needed.
Floor supported systems are ideal for applications where the load-bearing capability of the header is a concern.
- Provides long-term durability and smooth operation.
- Control construction costs. Requires less header load and limits the need for extensive pre-cambering.
- Improves the likelihood of keeping the existing header when retrofitting/remodeling.
To accommodate easy access, swing panels can be added either to the end of a chain of panels for systems with an odd number of panels folding in one direction or hinged to the side jamb, depending on unit height and configuration.
An up to 3' 3" (1000 mm) swing panel hinged to the side jamb is available. Tested to 500,000 opening and closing cycles, swing doors can be optionally outfitted with higher kickplates for ADA compliance. Panic hardware and top door closers by others are possible.
Three Sill Options with High Heel Resistant Feature
NW Reinforced 847 has three sill options: Performance, Low Profile Saddle Sill, Low Profile Saddle Sill with UniverSILL®. Standard to all sills is removable aluminum high heel resistant sill inserts. These inserts provide ADA compliance for the Low Profile Saddle sills and create a very barefoot-friendly transition. Furthermore, the inserts offer protection from dirt and debris collecting in the bottom track.
Unique Gothic Arch Roller
The running carriage rolls above the water table on two stainless steel wheels with a unique Gothic arch design supported by a double row of ball bearings. With a 2-point contact of each wheel to the floor track, the system glides quietly and smoothly with less friction by providing an equal distribution of weight on the stainless steel track.
Explore the Features and Benefits of Generation 4
- Stainless steel for clean appearance with sealing cushion to avoid thermal conductivity
- Provides optimal load transfer so less connection points required
- For enhanced aesthetics, all frame attachment points are hidden
- Provides an extra boost to thermal and acoustical performance
- Offers space for concealed cable routing for security systems by others
- Patented lateral adjustment of +/- 3/16″ (5 mm) to allow for construction tolerance
- Adjusts easily should extreme panel expansion/contraction occur
- Panel guide helps system glide through head track with smooth operation
- System operated on floor supported technology for ease of movement
- Proprietary engineered component stacks FourFold and SixFold panel sets neatly and securely when in open position
- Allows for dynamic stacking of panels at the left, right, or center of opening
- A pair of PowerLock throw bolts provide a double 1” (24 mm) engagement to the top and to the bottom for maximum security
- Activated by a simple 180° turn of the flat handle
- For state-of-the-art security, lock monitoring available with Reed contact (by others) and specialized magnetic locking rod end cap
- Can be connected to count opening/closing cycles to identify when maintenance should be performed (by others)
- Crisp, angular profile design for a modern aesthetic
- Intersection of two folding panels is a mere 5 1/4″ (133 mm) for minimal sightlines
- Flat handle multi-point secure locking with 1″ (24 mm) PowerLock throw bolts top and bottom
- The Bionic Turtle® single piece thermal break provides outstanding insulating within frame profiles
- Unique patented design houses the system’s locking rods to afford the slim profile appearance
- Hidden spring-loaded TwinX mechanism aligns panels over 7′ (2150 mm)
- Patented TwinX interlocks panels and provides structural reinforcement to eliminate exposed hinges in the middle of the system
- Creates barefoot and heel friendly transitions while protecting from debris accumulation in floor track
- Provides ADA compliance for Low Profile Saddle sill
- Produces channel for LED rope light floor illumination (by others)
- Inswing shown, outswing also available
- Thermally broken, provided with high heel resistant insert
- Built for higher water rating and weather resistance with compression gasketing on all sides
- Unique Gothic arch roller design for effortless operation
- Inswing shown with sufficient water rating provided
- Thermally broken, ADA compliant, high heel and barefoot friendly
- Outswing also available with UniverSILL® insert for enhanced water and air protection
- Unique Gothic arch roller design for effortless operation
Extreme Weather Resistant
Energy-efficient by design, our glass walls keep the elements at bay, ensuring that even as seasons or temperatures change, your interior comfort will always remain the same.
Certified Testing Standards
NanaWall products endure the latest AAMA testing standards for air, water, structural, and forced entry.
Highly Energy-Efficient
Designed to keep the elements at bay, holding warmth inside while acting as a transparent barrier to the weather outside.
Sustainable Design
This product contributes to multiple LEED rating systems and has HPD and EPD certification.
Download Declaration Documents
Test Results
Inside Generation 4 walls are innovations designed to meet the challenges of wind, water, extreme temperatures, forced entry, and structural load. Besides housing the system’s locking rods, our Bionic Turtle®—a patented, single-piece insulbar design—provides an exceptional insulating thermal break between the frame profiles: adding energy efficiency and year-round comfort.
Florida Product Approval # FL41110
See Air, Water, Structural, Thermal, and Forced Entry Results
Slim Aluminum Framed Folding Glass Door for Midrise and High-Rise Buildings
Engineered to meet the structural capabilities required for tall buildings or DP of +/- 85 psf, the reinforced frame profile is styled in a crisp, angular design where the intersection of two folding panels is a mere 5 1/4" (133 mm). This Generation 4 system offers a streamlined appearance with minimal exposed hardware, creating a new level of aesthetics.
| Performance Metric | Overall Tested Performance |
|---|---|
| Design Pressure | +85 / –85 psf (ASTM E-330) |
| Structural Load | Class CW-PG55 |
| Water Penetration | No leakage @ 9 psf (450 Pa) – Performance Sill No leakage @ 5.43 psf (260 Pa) – Low Profile Saddle Sill (ADA-Compliant, Barefoot-Friendly) |
| Air Infiltration | 0.03 @ 75 Pa / 0.08 @ 300 Pa |
| Thermal (U-Value) | 0.33 (Double Glazed Low E) 0.22 (Triple Glazed Low E) |
| Cycle Performance | 500,000 cycles (pass) swing panel 20,000 open and closing cycles |
| Forced Entry | AAMA 1304 (pass) |
| Sill-Specific Performance | View performance data by sill: Performance Sill | Low Profile Saddle Sill | Low Profile Saddle Sill with UniverSILL® |
Values shown are manufacturer-published test data. Always compare complete test reports for project specification.
50 standard colors that come at no additional cost, with an additional 200+ colors to chose from
See Finish Options
NW Reinforced 847 has three sill options: Performance, Low Profile Saddle Sill, Low Profile Saddle Sill with UniverSILL®.
Standard to all sills is removable aluminum high heel resistant sill inserts. These inserts provide ADA compliance for the Low Profile Saddle sill and create a very barefoot-friendly transition. Furthermore, the inserts offer protection from dirt and debris collecting in the bottom track.
See Sill Options
A fundamental benefit of this Generation 4 folding glass wall is energy efficiency. Depending on glass type selected, NW Reinforced 847 is up to 20% more thermally efficient than other NanaWall aluminum framed folding product making it an ideal choice for climates requiring superior thermal performance. The system comes standard with continuous seals along the face of each panel frame. Furthermore, standard for each system are two levels of insulating thermal breaks for optimal defense from heat and cold.
The glass pocket can accommodate glass from 7/8″ (22 mm) to 2 7/16″ (62 mm) insulated glass. All glazing is reduced iron (LT 89). Please contact NanaWall Systems for more details.
See Glazing Options
Stylish Handles in Multiple Finishes
Our handles are both functional and stylish and can be customized to accentuate your space and reflect your style.
See Handle Options
Locking for Maximum Security
Standard to the system is concealed locking between folding panels that operates with a 180° turn of a flat handle.
See Locking OptionsDesign and customize systems using our 3D CAD/Revit/Spec Configurators or contact our dedicated design team for more possibilities.
Over 90 standard configurations for straight-forward folding systems.
Standard configurations show the most common way folding glass wall panels align across a straight opening. Panels operate in a continuous line without special conditions such as corner openings, wall pockets, or intersections, making this layout a clear starting point for planning straightforward openings.
View More Standard Configurations View Product Applications
FourFold or SixFold panel sets use four or six connected folding panels operating along a single track. Panels move and stack to the right, left, or center, allowing flexible positioning based on layout and access needs.
View More FourFold / SixFold Panel Sets View Product Applications
Cornerless (Open Corner) configurations remove the vertical corner post where two operable glass walls meet at 90°, allowing panels to open in multiple directions and create a fully unobstructed corner opening. This layout enhances visual openness, spatial flow, and flexible indoor-outdoor transitions.
All standard configurations are available in cornerless options.
View More Open Corner Configurations
Pocketing configurations allow glass door panels to slide fully into a concealed wall pocket, creating a completely unobstructed opening and maximizing clear opening width. This layout supports clean sightlines and seamless indoor-outdoor transitions while integrating directly into the wall structure.
View More Pocketing ConfigurationsWhat Our Customers Have to Say
Justison Landing
Justison Landing in Wilmington, Delaware uses NanaWall folding glass walls to create larger openings in select residences, providing natural light and views of downtown Wilmington and the Christina River.
“Residents at 60 Orchard get the best of both worlds: a covered terrace, and no loss of indoor living space. For a condo, that represents significant added value.”
— Orlando Garcia, Architect
NW Reinforced 847 is engineered specifically for taller buildings where higher windload requirements and limits to deflection are critical. This thermally broken Generation 4 folding glass wall system is certified and performance-rated to CW55, with a design pressure rating of +/- 85 psf, making it well suited for demanding vertical applications such as balconies, terraces, and rooftops.
NW Reinforced 847 opens wide to 90% or more, creating a generous connection to balconies, terraces, and rooftops without the limitations of a traditional slider. The system also supports floor supported panels up to 11′ 6″ (3500 mm) tall, allowing architects and designers to create large, flexible openings while maintaining smooth operation and long-term durability.
As a custom-built architectural solution, NW Reinforced 847 offers extensive configuration flexibility, including over 90 standard configurations, a FourFold and SixFold panel set option for extended widths, open corner layouts, and pocketing configurations. Panel sets can stack to the left, right, or center within the same track, allowing the system to adapt to project-specific layout, access, and space-planning requirements.
NW Reinforced 847 is designed for strong weather performance and superior thermal efficiency. It includes continuous seals along the face of each panel frame and two levels of insulating thermal breaks to help protect interiors from heat, cold, wind, and water.
NW Reinforced 847 offers three sill options: Performance, Low Profile Saddle Sill, and Low Profile Saddle Sill with UniverSILL®. All sill options include removable aluminum high heel resistant inserts. These inserts support ADA compliance for Low Profile Saddle sill applications, create a barefoot-friendly transition, and help protect the bottom track from dirt and debris accumulation.
NW Reinforced 847 includes concealed locking between folding panels, operated by a simple 180° turn of a flat handle. The system also features PowerLock throw bolts with double 1″ engagement at the top and bottom for maximum security, while optional lock monitoring can be integrated by others for advanced security applications.
We consider ourselves your partners from day one. Connect immediately with a NanaWall expert to answer your questions and explore how we can support your project.
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