| MOUNTING HOLE TYPE | UNTHREADED | 
| SHAPE | RECTANGULAR W/ROUNDED CORNERS | 
| WIDTH | 271.5 INCHES MINIMUM AND 274.5 INCHES MAXIMUM | 
| THICKNESS | 3.175 INCHES NOMINAL | 
| CORNER RADIUS | 24.75 INCHES MINIMUM AND 25.05 INCHES MAXIMUM | 
| LENGTH | 378.5 INCHES MINIMUM AND 381.5 INCHES MAXIMUM | 
| MATERIAL DOCUMENT AND CLASSIFICATION | SPEC 48-00129-026 MFR REF SINGLE MATERIAL RESPONSE | 
| MATERIAL | ALUMINUM | 
| PART NAME ASSIGNED BY CONTROLLING AGENCY | ASSY PLATE, ECU MTG | 
| PROPRIETARY CHARACTERISTICS | PACS | 
| MOUNTING HOLE QUANTITY | 16 | 
| MOUNTING HOLE QUANTITY | 6 | 
| MOUNTING HOLE DIAMETER | 4.7 INCHES MINIMUM  AND 4.9 INCHES MAXIMUM SECOND HOLE | 
| MOUNTING HOLE DIAMETER | 6.5 INCHES MINIMUM  AND 6.7 INCHES MAXIMUM FIRST HOLE |