| /S/ Harvey L. Karp | /S/ Gregory L. Christopher | 
| Harvey L. Karp | Gregory L. Christopher | 
| Chairman of the Board | Chief Executive Officer | 
| 
               For
      the Quarter Ended 
             | 
            
               For
      the Nine Months Ended 
             | 
            |||||||||||||||
| 
               September
      26, 2009 
             | 
            
               September
      27, 2008 
             | 
            
               September
      26, 2009 
             | 
            
               September
      27, 2008 
             | 
            |||||||||||||
| 
               (In
      thousands, except per share data) 
             | 
            ||||||||||||||||
| 
               Net
      sales 
             | 
            
               $ 
             | 
            
               419,890 
             | 
            
               $ 
             | 
            
               665,496 
             | 
            
               $ 
             | 
            
               1,114,248 
             | 
            
               $ 
             | 
            
               2,123,075 
             | 
            ||||||||
| 
               Cost
      of goods sold 
             | 
            
               354,039 
             | 
            
               588,469 
             | 
            
               954,775 
             | 
            
               1,861,475 
             | 
            ||||||||||||
| 
               Depreciation
      and amortization 
             | 
            
               10,441 
             | 
            
               11,529 
             | 
            
               31,276 
             | 
            
               33,517 
             | 
            ||||||||||||
| 
               Selling,
      general, and administrative expense 
             | 
            
               27,593 
             | 
            
               35,674 
             | 
            
               89,067 
             | 
            
               108,583 
             | 
            ||||||||||||
| 
               Operating
      income 
             | 
            
               27,817 
             | 
            
               29,824 
             | 
            
               39,130 
             | 
            
               119,500 
             | 
            ||||||||||||
| 
               Interest
      expense 
             | 
            
               (2,435 
             | 
            
               ) 
             | 
            
               (5,050 
             | 
            
               ) 
             | 
            
               (7,553 
             | 
            
               ) 
             | 
            
               (15,755 
             | 
            
               ) 
             | 
          ||||||||
| 
               Other
      (expense) income, net 
             | 
            
               (324 
             | 
            
               ) 
             | 
            
               2,573 
             | 
            
               688 
             | 
            
               9,103 
             | 
            |||||||||||
| 
               Income
      before income taxes 
             | 
            
               25,058 
             | 
            
               27,347 
             | 
            
               32,265 
             | 
            
               112,848 
             | 
            ||||||||||||
| 
               Income
      tax expense 
             | 
            
               (6,246 
             | 
            
               ) 
             | 
            
               (8,422 
             | 
            
               ) 
             | 
            
               (9,796 
             | 
            
               ) 
             | 
            
               (37,992 
             | 
            
               ) 
             | 
          ||||||||
| 
               Consolidated
      net income 
             | 
            
               18,812 
             | 
            
               18,925 
             | 
            
               22,469 
             | 
            
               74,856 
             | 
            ||||||||||||
| 
               Less:
      net income attributable to noncontrolling interest 
             | 
            
               (146 
             | 
            
               ) 
             | 
            
               (254 
             | 
            
               ) 
             | 
            
               (267 
             | 
            
               ) 
             | 
            
               (1,816 
             | 
            
               ) 
             | 
          ||||||||
| 
               Net
      income attributable to Mueller Industries, Inc. 
             | 
            
               $ 
             | 
            
               18,666 
             | 
            
               $ 
             | 
            
               18,671 
             | 
            
               $ 
             | 
            
               22,202 
             | 
            
               $ 
             | 
            
               73,040 
             | 
            ||||||||
| 
               Weighted
      average shares for basic earnings per share 
             | 
            
               37,474 
             | 
            
               37,136 
             | 
            
               37,253 
             | 
            
               37,117 
             | 
            ||||||||||||
| 
               Effect
      of dilutive stock options 
             | 
            
               72 
             | 
            
               176 
             | 
            
               89 
             | 
            
               238 
             | 
            ||||||||||||
| 
               Adjusted
      weighted average shares for diluted earnings per share 
             | 
            
               37,546 
             | 
            
               37,312 
             | 
            
               37,342 
             | 
            
               37,355 
             | 
            ||||||||||||
| 
               Basic
      earnings per share 
             | 
            
               $ 
             | 
            
               0.50 
             | 
            
               $ 
             | 
            
               0.50 
             | 
            
               $ 
             | 
            
               0.60 
             | 
            
               $ 
             | 
            
               1.97 
             | 
            ||||||||
| 
               Diluted
      earnings per share 
             | 
            
               $ 
             | 
            
               0.50 
             | 
            
               $ 
             | 
            
               0.50 
             | 
            
               $ 
             | 
            
               0.59 
             | 
            
               $ 
             | 
            
               1.96 
             | 
            ||||||||
| 
               Dividends
      per share 
             | 
            
               $ 
             | 
            
               0.10 
             | 
            
               $ 
             | 
            
               0.10 
             | 
            
               $ 
             | 
            
               0.30 
             | 
            
               $ 
             | 
            
               0.30 
             | 
            ||||||||
| 
                 September
      26, 
               | 
              
                 December
      27, 
               | 
              
                 September
      26, 
               | 
              
                 December
      27, 
               | 
              ||||||||||||||
| 
                 2009 
               | 
              
                 2008 
               | 
              
                 2009 
               | 
              
                 2008 
               | 
              ||||||||||||||
| 
                 (In
      thousands) 
               | 
              
                 (In
      thousands) 
               | 
              ||||||||||||||||
| 
                 ASSETS 
               | 
              
                 LIABILITIES
      AND STOCKHOLDERS' EQUITY 
               | 
              ||||||||||||||||
| 
                 Cash
      and cash equivalents 
               | 
              $ | 353,874 | $ | 278,860 | 
                 Current
      portion of long-term debt 
               | 
              $ | 12,372 | $ | 24,184 | ||||||||
| 
                 Accounts
      receivable, net 
               | 
              225,316 | 219,035 | 
                 Accounts
      payable 
               | 
              70,380 | 63,732 | ||||||||||||
| 
                 Inventories 
               | 
              178,372 | 210,609 | 
                 Other
      current liabilities 
               | 
              96,346 | 113,668 | ||||||||||||
| 
                 Other
      current assets 
               | 
              30,327 | 46,322 | |||||||||||||||
| 
                 Total
      current assets 
               | 
              787,889 | 754,826 | 
                     Total
      current liabilities 
               | 
              179,098 | 201,584 | ||||||||||||
| 
                 Long-term
      debt 
               | 
              158,226 | 158,726 | |||||||||||||||
| 
                 Pension
      and postretirement liabilities 
               | 
              39,180 | 38,452 | |||||||||||||||
| 
                 | 
              
                 Environmental
      reserves 
               | 
              23,090 | 23,248 | ||||||||||||||
| Property, plant, and equipment, net | 258,278 | 276,927 | Deferred income taxes | 33,435 | 33,940 | ||||||||||||
| 
                 Other
      assets 
               | 
              151,429 | 151,160 | 
                 Other
      noncurrent liabilities 
               | 
              1,401 | 1,698 | ||||||||||||
| 
                     Total
      liabilities 
               | 
              434,430 | 457,648 | |||||||||||||||
| 
                 Stockholders'
      equity 
               | 
              737,799 | 700,683 | |||||||||||||||
| 
                 Noncontrolling
      interest 
               | 
              25,367 | 24,582 | |||||||||||||||
| 
                     Total
      equity 
               | 
              763,166 | 725,265 | |||||||||||||||
| $ | 1,197,596 | $ | 1,182,913 | $ | 1,197,596 | $ | 1,182,913 | ||||||||||