| CROSS-SECTIONAL SHAPE STYLE | SQUARE/RECTANGULAR TOP RING |
| CROSS-SECTIONAL SHAPE STYLE | SQUARE/RECTANGULAR BOTTOM RING |
| CROSS-SECTIONAL SHAPE STYLE | SQUARE/RECTANGULAR INTERMEDIATE RING |
| INTERMEDIATE RING QUANTITY | 5 |
| SPECIAL FEATURES | ITEM IS MADE OF NONASBESTOS FIBER AND LEAD THREADS |