PRODUCT TECHNICAL DATA Saflex® Crystal Clear – Polyvinyl Butyral Interlayer Saflex® interlayers are plasticized polyvinyl butyral (PVB) sheeting produced by Eastman and its affiliates. These interlayers are permanently bonded through a heat and pressure process to two or more pieces of glazing to produce laminates with impact and glass containment properties. Saflex Crystal Clear PVB interlayer is Eastman’s interlayer that provides a highly desirable aesthetic to create the most color-neutral laminated glass available from the Saflex portfolio. Aiming to enhance the natural aesthetics of low-iron glass, Saflex Crystal Clear was designed to remain virtually undetectable at any visible angle, in any light. Laminated glasses with the properly laminated Saflex Crystal Clear PVB are capable of being classified as safety glass in accordance with, but not limited to, various regulations such as ANSI Z26.1, ANSI Z97.1, AS/NZS 2208; CNS 1183, CPSC 16 CFR 1201, EN 12600 and ISO 29584. Product Overview: Saflex Crystal Clear PVB interlayer, has demonstrably met or exceeded many regulations for laminated safety glazing (including those listed above) when properly selected, laminated, and installed. Saflex Crystal Clear was specifically formulated to provide exceptional durability when exposed to natural weathering, especially when laminate edges are left unprotected from the elements. Saflex Crystal Clear PVB interlayers have been shown to be compatible and durable when laminated in intimate contact with most infrared reflective, metal coated glasses. Saflex Crystal Clear PVB interlayer can be combined with other Saflex and Vanceva PVB interlayers designated for the architectural market. More information on Saflex Crystal Clear PVB interlayer can be found at www.saflex.com or by contacting your local Eastman representatives. Available Forms: All Saflex interlayers are supplied in roll form on 15.2 cm (6 inch) diameter cores. Saflex Crystal Clear PVB interlayer is supplied in a variety of roll lengths and widths. The most common standard roll length is 250 meters (820 feet). The thickness is 0.76mm (0.030 inch). Saflex Crystal Clear PVB interlayer is available only in its color neutral form and is designated as RB4N. Storage Conditions: Saflex Crystal Clear PVB interlayer should be stored inside the moisture barrier bag that the roll is shipped in and maintained within the temperatures recommended in the Saflex laminating guide. It is recommended that the interlayer be used within a two- year period from purchase to minimize the sheet adhering to itself on the roll (blocking). Laminating Conditions: A Laminating Guide which details recommended practices for storage, handling and lamination is available to Eastman’s laminating partners. This technical guide is available only from a Saflex Technical Service (TS) Representative or Saflex Sales Manager. To find the name of the Saflex representative for your organization, call 1-800-636-8670. Applications Technical Documentation (ATD) 730 Worcester Street | Springfield, MA 01151 [email protected] | www.saflex.com | www.vanceva.com product technical sheet - saflex crystal clear (rb4n)_092820.docx Page 1

Saflex® Crystal Clear – Select Properties1: Test Method Poisson's Ratio Saflex® Crystal Clear Interlayer Mechanical Tear Resistance Tensile strength Applications Technical Documentation (ATD) 730 Worcester Street | Springfield, MA 01151 [email protected] | www.saflex.com | www.vanceva.com product technical sheet - saflex crystal clear (rb4n)_092820.docx P

Refractive Index Glass Transition Temperature Roll Length Target ± 2 ordered minimum Specific Gravity/Density Specific Heat Test Method Yellowness Index Property Haze Saflex® Crystal Clear Interlayer Ordered minimum Safety Glazing Impact Twin Tyre 45 kg (100 lb) Shot Bag 45 kg (100 lb) Shot Bag ANSI Z26.1; ASTM F3006, ECE R43 EN 12600; ISO 29584 ANSI Z97.1; CPSC 16 CFR 1201 ANSI Z97.1; CPSC 16 CFR 1201 Applications Technical Documentation (ATD) 730 Worcester Street | Springfield, MA 01151 [email protected] | www.saflex.com | www.vanceva.com product technical sheet - saflex crystal clear (rb4n)_092820.docx...

Saflex® Crystal Clear Interlayer Calculated NFRC 100 Damage Weighted (Tdw-K) Damage Weighted (Tdw-ISO) Transmitted UV Test Method Solar Transmittance Solar Reflectance Solar Absorptance LBNL WINDOW 7.0 NFRC 100 Visible Transmittance Visible Reflectance Solar2 Solar Heat Gain Coefficient Sun Protection Factor Light to Solar Gain U Factor Test Method Coefficient of Thermal Expansion Saflex® Crystal Clear Interlayer Thermal Conductivity Emissivity 1 - Data based on NOA for Saflex formulation 2 - Solar, Thermal, Optical and Color data based on 0.76 mm Saflex Crystal Clear (RB4N) PVB interlayer with...

The relaxation modulus and calculated Young’s modulus for Saflex Crystal Clear PVB interlayer are based on relaxation modulus values for a given duration at temperature and is provided for use in calculating structural capacity of laminated glass containing this product. Saflex® Crystal Clear PVB interlayer shear relaxation modulus G(t) (MPa) Temperature (°C) Applications Technical Documentation (ATD) 730 Worcester Street | Springfield, MA 01151 [email protected] | www.saflex.com | www.vanceva.com product technical sheet - saflex crystal clear (rb4n)_092820.docx Page 5 of 6

Saflex® Crystal Clear PVB Interlayer Young's relaxation modulus E(t) (MPa) Temperature (°C) Load Duration 10 3 sec 10 sec 30 sec 1 min 5 min 10 min 30 min 1 hour 6 hours 12 hours 1 day 5 days 1 week 3 weeks 1 month 1 year* 10 years* 15 years* 50 years* *values not validated Values calculated using E = 3G as per EN 16613 par 5.1; for exact values of the Young's modulus available actual Poisson's ratio can be used Notice: Although the information and/or recommendations as may be set forth herein (hereafter “Information”) are presented in good faith and believed to be correct at the date hereof,...