[QUALITY MANAGEMENT SYSTEM - GLASS STANDARDS] 1.0 Scope

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1 1.0 Scope 1.1 This document defines the methods and quality criteria in which AMI establishes a common basis for inspection that exceeds the industry s and major manufacturers standards (ASTM C1036 Reference Standard). This document provides AMI operations, suppliers and customers criteria for windows, sash, insulated glass (IG) units, cut glass, and flat glass. 1.2 All glass consists of imperfections, as documented and standardized in the glass industry. Provided these imperfections are not viewable under the defined inspection method & lighting conditions AND do not exceed the acceptable limits defined in this document, then the glass should not be rejected. The intent is to create objective quality standards. 2.0 Table of Contents 1. Scope 2. Table Of Contents 3. Inspection Station Standards 4. Inspection Method 5. Spacer Standards 6. Grid Standards 7. Insulated Glass (IG) and Cut Glass Standards 8. Appendix 9. Revision Log QMS QMS-AMI-GLASS

2 3.0 Inspection Station Standards 3.1 Inspection stations must be designed to allow proper angle, distance and/or orientation of the glass being inspected to the light source. 3.2 Reflective Lighting of /- 400 LUX rating when measured using the criteria listed in section 3.5 must be provided to the station to allow proper viewing of grid and matrix defects The fixture shall support the required lamp T5HO Lamp, 85CRI 4100K, recommended manufacturing model of HBL654HT5-L The recommended lamps shall be T5HO Lamp, 85CRI 4100K The reflective lighting fixture shall be placed 11 feet off of the floor and 5 feet back from the backboard where the transmissive lighting is mounted The reflective lighting shall be angled at 25 +/- 5 degrees towards the inspection station. The lighting angle shall cover the entire inspection area where units will be placed. 3.3 Transmissive Lighting of /- 800 LUX rating when measured using the criteria listed in section The fixture shall be a channel strip single lamp fixture that supports the required lamp F32T8, recommended manufacturing model of Z132MV or SNF132UNV-EB81U The recommended lamp manufacturing model is F32T8/SP65/ECO Single fixture units shall be placed 10 center to center across the inspection station area. This allows for consistent light output with no peaks or valleys between lights. Fixture and lighting coverage shall be fit to the inspection station size and usage. 3.4 Glass is NOT intended to be inspected under close-up scrutiny or held under direct sunlight, as these conditions will almost always reveal tiny glass imperfections that would otherwise be considered acceptable within AMI and industry standards. QMS QMS-AMI-GLASS

3 Table LUX Level by Lightning Conditions [QUALITY MANAGEMENT SYSTEM All LUX rating shall be measured using an EXTECH Instruments : Heavy Duty Light Meter with PC Interface Reflective lighting shall be tested with the light-meter facing up above the belt (inspection area) at 4 feet above the floor Transmissive lighting shall be tested with the light-meter facing the inspection station at 90 degrees and at 1 foot away from the lamps. QMS QMS-AMI-GLASS

4 4.0 Inspection Method 4.1 Glass shall be inspected per a standard process Windows, sash, IG units and cut glass shall be inspected at a distance of 3 feet as shown in example Glass shall be inspected visually for an appropriate time based on glass size per table ; if a unit has grids that inspection should also take place during this allotted time. This inspection time does not include any required measurements or validation if imperfections are seen. Table Glass Visual Inspection Time Glass Size Inspection Time < 6 Square Feet 5 Seconds 6-35 Square Feet 10 Seconds > 35 Square Feet 20 Seconds If imperfections are viewable at 3 feet, the inspector shall step forward to validate if the identified imperfections exceed the criteria listed in this document. If the imperfections exceed the criteria, the unit should be rejected or may be reworked per criteria listed at table Multiple imperfections clause: If a unit displays multiple imperfections viewable from 3 feet, at a smaller size than the reject criteria listed on table of 6.2.2, table and table 7.1.2, the following shall apply: Any units with 2 or more imperfections that are closer than 1 apart shall be rejected regardless of the size of the imperfection, if they are viewable from 3 feet. Any units with three or more imperfections shall be rejected regardless of the size of the imperfection, if they are viewable from 3 feet. 4.2 AMI will require additional inspection for Field Remakes (units rejected by AMI s customers) as defined in the purchase order/download. AMI may also require additional inspection in order to meet customer expectations in special circumstances, which will be defined in the purchase order/download AMI may inspect for imperfections for field remakes at the distances that represent the homeowner s use of the finished product and their ability to detect flaws in glass assemblies. Inspector shall inspect the field remake at 90 degrees and at an angle of 45 degrees from the left and the QMS QMS-AMI-GLASS

5 right on each side. This inspection method supersedes the standard process defined in this document. 5.0 Spacer Standards 5.1 Intercept standards shall be monitored and controlled through Statistical Process Control (SPC) charts as documented in CP X.XX Intercept Spacer. Table Intercept Spacer Requirements Characteristic SPC Document Reject Criteria Tolerance Spacer Width PCC-SWI- V_X.X See Table / Spacer Tab Swage PCC-STI- V_X.X Spacer Width " " " Spacer Splay PCC-SSI- V_X.X Spacer Width " " Spacer Corner Flare PCC-CFI- V_X.X Spacer Width " " Table Nominal Size Decimal Equivalents Nominal Size Decimal Equivalent 9/ / / / / / / Super Spacer Placeholder QMS QMS-AMI-GLASS

6 6.0 Grid Standards 6.1 If present, grids shall be inspected visually from 3 feet for imperfections during glass inspection. If the imperfections are viewable at 3 feet, the inspector shall step forward to validate the identified imperfections exceed the criteria listed in table If they exceed the criteria listed in table or 6.2.3; the unit shall be rejected If grids display multiple imperfections within the same unit which are viewable from 3 feet, the multiple imperfections clause in shall apply, regardless of the size of the imperfections. 6.2 Spacer / Grid Gaps are inspected while using a profile gauge to simulate the sightline. If the gap exceeds the criteria and is visible when the profile gauge is applied, the unit shall be rejected. Figure Grid Characteristic Examples Table Interior Surface Grid Visual Quality Requirements Characteristic Reject Criteria Burrs / Shavings >1/32 Fold-Overs / Dog Ears >1/32 Paint Chips / Marks / Spots >1/32 Dent / Crease >1/8 Scratches (Length) >1/4 Smudges / Fingerprints >1/4 Grid Gap at Spacer inside of >1/8 Sightline Spacer Seam / Grid Gap at >1/16 Mitered Corner QMS QMS-AMI-GLASS

7 Table Exterior Surface Grid Visual Quality Requirements Characteristic Reject Criteria Burrs / Shavings >1/16 Fold-Overs / Dog Ears >1/16 Paint Chips / Marks / Spots >1/16 Dent / Crease >1/8 Scratches (Length) >1/4 Smudges / Fingerprints >1/4 Grid Gap at Spacer inside of >1/8 Sightline Spacer Seam / Grid Gap at >1/16 Mitered Corner (See Figure 6.2.2) [QUALITY MANAGEMENT SYSTEM The seam on the grids, by preference, but not required, should always be oriented downwards on horizontal grids, and either left or right (not both) on vertical grids. 6.4 Grid straightness shall be inspected visually from 3 feet during glass inspection. Any grid that appears out of alignment shall then be measured using a tape measure. Measurements should be from the edge of the glass to the edge of each grid. Then the maximum difference between the two measurements (e.g. C2-C1, A2-A1) should meet the criteria listed in table Table Grid Straightness Quality Requirements Length / Measurement Reject Criteria < 4 Inches > +/- 1/32 > 4 Inches > +/- 1/16 Between Sashes / Units > +/- 1/8 QMS QMS-AMI-GLASS

8 Figure Grid Straightness Measurement Example A2 A1 (4 1/32 ) (4 ) = 1/32 Acceptable <=1/32 Examples B2 B1 (8 1/8 ) (8 ) = 1/8 Unacceptable >1/16 C2 C1 (5 9/16 ) (5 1/2 ) = 1/16 Acceptable <=1/16 QMS QMS-AMI-GLASS

9 7.0 Insulated Glass (IG) and Cut Glass Standards 7.1 Glass shall be inspected visually from 3 feet for imperfections. If the imperfections are viewable at 3 feet, the inspector shall step forward to validate the identified imperfections exceed the criteria listed in table If the imperfections exceed the criteria, the unit should be rejected. For linear blemishes the intensity rating shall be determined by the distance in which the imperfection is viewable under the inspection station requirements in section If glass displays multiple imperfections within the same unit which are viewable from 3 feet, the multiple imperfections clause in shall apply, regardless of the size of the imperfections. Table Coating and Visual Quality Requirements Characteristic Reject Criteria Scuff / Streak > 1/16 Debris > 1/16 Spots > 1/16 Bubbles > 1/16 Hair / Lint > 1/16 Butyl > 1/16 Fingerprints > 1/16 Linear Blemish (Scratch) Quality Requirements Intensity Viewing Distance Reject Criteria Disposition if Rejected Faint 0-8 Inches Allowed Pass Light 8-36 Inches > 1 Rework Medium: Visible/finger nail will not feel the depth of scratch Inches > 1/2" Rework Heavy: Very noticeable/ finger nail will feel the depth of scratch 120+ Inches None Allowed Scrap 7.2 Tempered glass can exhibit slight optical distortion, even more so when LOW-E is involved. This distortion is accentuated when looking off-angle or against a dark background. Relative waviness of glass should not be rejected, unless the glass has obvious distortions when viewing under the inspection standard in section 3.0. QMS QMS-AMI-GLASS

10 7.3 Overall IG size shall not exceed a final size of > +/- 1/16 outside of the specific unit size. This includes any variation in glass alignment and butyl squeeze-out Alignment of the cut pieces of glass shall not be offset > 1/16 and must not allow the total unit size to increase beyond the specification in Butyl squeeze-out shall not extent > 1/16 the edge of the glass and must not allow the total unit size to increase beyond the specification in Edge deletion shall occur no further than 7/16 from the edge of the glass. 7.5 Glass spacer or butyl should not be exposed more than 1/16 around the perimeter. 7.6 Matrix and Butyl imperfections in the Matrix on spacers are not cause for IG rejection provided the blemish is outside the sightline. However, action should be taken with the process control plan to minimize and monitor such properties. Breaks in the matrix shall be reviewed by plant quality authority for acceptance, but are not preferred. 7.7 Glass edge quality and the resulting glass edge strength are critical to the performance of the glass under thermal loading and in applications where one or more edges are not supported. AMI uses an industry standard specification defined regard to rejecting edge damage. Guideline for Cut Edge Quality TD-119 can be found at OR QMS QMS-AMI-GLASS

11 8.0 Appendix 8.1 Gauges 9.0 Revision Log Date Revision Changes Approval 5/17/ Document Creation PowellJE 8/22/ Revised wording 3.2 for wording consistency PowellJE 9/18/ Revised to reflect new scratch standard to align with PowellJE other glass defects 10/2/ Revised wording in Table 6.2.1, Revised Figure FerryKA 10/2/ Added spacer information to section 5.0 PowellJE Revised wording in 7.7 referencing wrong drawing 10/9/ Revise 7.1.2, change glass scratch back to 1 LiangLI 08/12/ Initial document review with engineering, manufacturing, PowellJE quality and marketing Added Table to include exterior grid defect criteria Added examples to grid measurement on Figure Revised Table Grid gap at spacer inside of sightline from 1/16 to 1/8" and exterior/interior specification differences. Revised Table to include intensity scale for acceptable linear blemishes (scratches) and updated separation on clusters from ¼ to 1 minimum spacing Revised to reference sections 6.2 and 7.1 in determining cluster criteria 08/22/ Revised 7.1 to describe intensity ratings for linear PowellJE blemishes Revised to include viewing distance range for each intensity and allowable criteria for medium intensity Revised 7.2 to accurately reference section 3.0 for the inspection station standard 09/04/ Revised Table from >1/16 to >1/2 for medium PowellJE intensity linear blemishes per discussion with engineering 9/17/ Revised to add rework; Revised Max number of imperfection allowed per unit and none allowed for cluster; Revised and to reference Section Revised with inspection angle requirement; Revised Table spec of Grid Gap; Revised Table Scratch with definition of medium/heavy and add disposition guideline; Revise 7.7 to include industry standard PPG cut edge quality link; Revised Table 6.2.2,Table 6.2.3,Table LiangLI QMS QMS-AMI-GLASS

12 removing Size separation column. 9/25/ Added reference to the Multiple imperfections clause in 4.1.4, invoked in and Revised verbiage for spacer/grid gaps in 6.2 ShiolenoGL QMS QMS-AMI-GLASS