<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS OF THE GLASS YARNS AND SPECIALTY MATERIALS BUSINESS, A
BUSINESS UNIT OF OWENS CORNING, FOR THE YEAR ENDED DECEMBER 31, 1997, AND FOR
THE NINE MONTHS ENDED SEPTEMBER 30, 1998 AND FOR ADVANCED GLASSFIBER YARNS
LLC FOR THE THREE MONTHS ENDED DECEMBER 31, 1998 AND FOR THE YEAR ENDED
DECEMBER 31, 1999
</LEGEND>
<CIK> 0001078420
<NAME> ADVANCED GLASSFIBER YARNS LLC

<S>                             <C>            <C>            <C>            <C>
<PERIOD-TYPE>                   12-MOS         9-MOS          3-MOS          12-MOS
<FISCAL-YEAR-END>               DEC-31-1997    DEC-31-1998    DEC-31-1998    DEC-31-1999
<PERIOD-START>                  JAN-01-1997    JAN-01-1998    OCT-01-1998    JAN-01-1999
<PERIOD-END>                    DEC-31-1997    SEP-30-1998    DEC-31-1998    DEC-31-1999
<CASH>                                    0              0         12,779          6,233
<SECURITIES>                              0              0              0              0
<RECEIVABLES>                        20,691              0         35,480         35,886
<ALLOWANCES>                          1,419              0          2,823          3,200
<INVENTORY>                          19,168              0         24,691         26,813
<CURRENT-ASSETS>                     43,127              0         70,344         66,367
<PP&E>                              248,537              0        155,117        166,709
<DEPRECIATION>                      142,979              0          2,753         15,104
<TOTAL-ASSETS>                      153,961              0        465,469        453,642
<CURRENT-LIABILITIES>                54,999              0         38,283         68,331
<BONDS>                                   0              0              0              0
<PREFERRED-MANDATORY>                     0              0              0              0
<PREFERRED>                               0              0              0              0
<COMMON>                                  0              0              0              0
<OTHER-SE>                           30,940              0         21,285         20,231
<TOTAL-LIABILITY-AND-EQUITY>        153,961              0        465,469        453,642
<SALES>                             277,357        205,248         63,403        252,236
<TOTAL-REVENUES>                    277,357        205,248         63,403        252,236
<CGS>                               182,366        134,820         43,494        183,138
<TOTAL-COSTS>                       182,366        134,820         43,494        183,138
<OTHER-EXPENSES>                          0              0              0              0
<LOSS-PROVISION>                          0              0              0              0
<INTEREST-EXPENSE>                        0              0          9,113         36,824
<INCOME-PRETAX>                      82,866         59,235          4,275          5,796
<INCOME-TAX>                         32,540         16,226              0            190
<INCOME-CONTINUING>                  50,326         43,009          4,275          5,606
<DISCONTINUED>                            0              0              0              0
<EXTRAORDINARY>                           0              0              0          3,616
<CHANGES>                                 0              0              0              0
<NET-INCOME>                         50,326         43,009          4,275          1,990
<EPS-BASIC>                             0              0              0              0
<EPS-DILUTED>                             0              0              0              0


</TABLE>