| APERTURE LENGTH | 17.5 INCHES NOMINAL |
| APERTURE WIDTH | 6.15 INCHES NOMINAL |
| BOLT HOLE QUANTITY | 42 |
| CROSS-SECTIONAL THICKNESS | 0.090 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM B209 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| OVERALL LENGTH | 18.99 INCHES MINIMUM AND 19.01 INCHES MAXIMUM |
| OVERALL WIDTH | 7.24 INCHES MINIMUM AND 7.26 INCHES MAXIMUM |
| MATERIAL | ALUMINUM ALLOY 6061 OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | RING, FLEX DUCT, EMI |
| SPECIAL FEATURES | GASKET HAS (42) TOTAL MOUNTING HOLES, (26) WITH .200 INCH THRU DIAMETER, AND (16) WITH .297 INCH THRU DIAMETER. |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-DTL-5541, TYPE 1, CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CHROMATE OVERALL |