MFI® System Cladding Support
Design Without Compromise—Anchored by Strength and Thermal Integrity
The MFI® System is a thermally isolated clip-and-rail support system engineered to dramatically reduce thermal bridging while supporting a wide variety of cladding assemblies. At the core of the system are Knight Wall Systems’ THERMABRACKET® and THERMASTOP® technology, which minimize heat transfer through the wall assembly while maintaining the strength and durability required for demanding façade applications.
Available in both S-Series (fixed) and D-Series (adjustable) configurations, the MFI® System can be tailored to meet a variety of project-specific conditions.
Key Features & Benefits
- One of the industry’s most thermally efficient steel clip-and-rail systems
- Built-in adjustability reduces labor and complexity
- High-strength THERMABRACKET® supports wider bracket spacing
- Meets North American energy code requirements
- Broad design flexibility for architectural creativity
- Well suited for renovation and uneven substrates
Technical Specifications
ORIENTATION
Installs vertically or horizontally
RAIL DEPTHS
S-Rail ¾ or 1 inch; D-Rail 1.5 inch
BRACKET DEPTHS
2”, 2.5”, 3.5”, 4”, 5”, 6” standard and up to 16” custom
THERMAL PERFORMANCE
Project value pending technical confirmation
FASTENERS
Thermally isolated LD/TP fasteners
INSULATION
Mineral wool or high-density mineral wool
ACCESSORY COMPATIBILITY
PANELRAIL®, REVEALRAIL and MOVEKLIP™
Product Video
Available Downloads
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MFI® System Summary Sheet
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S-Series THERMABRACKET® Data Sheet
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D-Series THERMABRACKET® Data Sheet
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S Rail Data Sheet
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D Rail Data Sheet
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S Rail 100 Data Sheet
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MFI® Thermal Performance Summary
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MFI® Guide Specifications – S-Series Guide Specification – 07 05 43
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MFI® System Guide Specifications – D-Series Guide Specification – 07 05 43
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MFI System (RVT Zip File)
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MFI® System Cladding Attachment Assembly Guide Details – Vertical Orientation – S-Series
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MFI® System Cladding Attachment Assembly Guide Details – Vertical Orientation – S-Series
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MFI® System Cladding Attachment Assembly Guide Details – Horizontal Orientation – S-Series
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MFI® System Cladding Attachment Assembly Guide Details – Horizontal Orientation – S-Series
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MFI® System Cladding Attachment Assembly Guide Details – Vertical Orientation – D-Series
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MFI® System Cladding Attachment Assembly Guide Details – Vertical Orientation – D-Series
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MFI® System Cladding Attachment Assembly Guide Details – Horizontal Orientation – D-Series
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MFI® System Cladding Attachment Assembly Guide Details – Horizontal Orientation – D-Series
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MFI® System EPD
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MFI® System Design & Installation Recommendations (PDF)
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MFI® System Declare Label
FREQUENTLY ASKED QUESTIONS
Questions About MFI® System?
Technical and installation guidance based on the supplied product content.
What is the difference between the S-Series and D-Series THERMABRACKETS®?
The S-Series offers a static ¾-inch or 1-inch cavity depth outboard of the insulation. The D-Series offers a dynamic 1.5-inch cavity depth with up to ¾-inch adjustability.
How much adjustability does the D-Series THERMABRACKET® have?
The D-Series THERMABRACKET® has up to ¾ inch of adjustability, simplifying façade alignment on out-of-plumb walls.
What insulation types are compatible with the MFI® System?
The MFI® System is compatible with mineral wool and high-density mineral wool.
How much weight can the MFI® System support?
The MFI® System supports cladding weights up to 25 PSF.*
What materials can the MFI® System be installed over?
The MFI® System can be installed over steel studs, wood studs, CMU and concrete.
What gauges is the MFI® System available in?
MFI® rails are available in 18 GA or 16 GA American-made steel. All THERMABRACKETS® are 14 GA.
What finishes are available for the MFI® System?
The MFI® System is available in ZM40 Zn-Al-Mg coated steel or 304 stainless steel, with a standard mill finish or Black PVDF finish.
Is the MFI® System third-party verified, EPD documented and Red List Free?
Yes. EPDs and Declare labels are available in the Documents & Downloads gallery.
What warranty is included with the MFI® System?
The MFI® System is backed by a 10-year limited warranty when paired with Knight Wall Systems Project-Specific Engineering.
*Spacing of components varies by project based on project specific conditions. Maximum allowable spacing and dead load (weight of cladding) is based on the total load (dead + live) acting on the assembly and connections. Depending on the system, insulation thickness will influence the systems capacities.
Wall anchors must be specified and supplied by KWS for an extended written limited warranty. KWS will specify the exact anchor type, embedment depth and spacing for anchors in project specific engineering packages. ThermaStop thermal isolation washers must be used on all types of wall anchors with the HCI or CI System, regardless of the substrate.
NO EXPRESS WARRANTIES ARE GIVEN EXCEPT FOR ANY APPLICABLE WRITTEN WARRANTIES SPECIFICALLY PROVIDED BY KNIGHT WALL SYSTEMS®. ALL IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED. No freedom from any patent owned by Knight Wall Systems® or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information on this website are appropriate for Customer’s use. They are not guaranteed in any way by the Knight Wall Systems, Inc. since building design, engineering, and construction, including workmanship and materials are beyond the control of the manufacturer. The information provided here is subject to change without notice. All content included on this website is and shall continue to be the property of Knight Wall Systems, Inc. or its content suppliers, and is protected under applicable copyright, trademark, and other proprietary rights. KNIGHT WALL SYSTEMS, the Knight Wall Systems design mark, KWS, ANKIT, CI, CI-Girt, FORMED TO PROTECT WHAT MATTERS MOST, INSULKEY, MFI, MOVEKLIP, PANELRAIL, TERMGIRT, THERMABRACKET, THERMASTOP, ADJUSTAKLIP, and THERMAZEE are registered trademarks controlled by Knight Wall Systems, Inc. Patent information: knightwallsystems.com/patents. This list is not exhaustive and Knight Wall Systems does not waive its rights in regard to other patents or trademarks that are not listed.
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