**Exhibit 12.1**

 

**Ratio of Earnings to Fixed Charges**

**(amounts in thousands other than ratios)**

** **
| ** **                                                  | ** ** | ** **            | ** ** | ** **            | ** ** | ** **            | ** ** | ** **            | ** ** | ** **            | ** ** | **Three**         | ** ** |
|-------------------------------------------------------------|------------|-----------------------|------------|-----------------------|------------|-----------------------|------------|-----------------------|------------|-----------------------|------------|-------------------|------------|
| ** **                                                  | ** ** | ** **            | ** ** | ** **            | ** ** | ** **            | ** ** | ** **            | ** ** | ** **            | ** ** | **Months**        | ** ** |
| ** **                                                  | ** ** | **Year Ended**   | ** ** | **Ended**             | ** ** |
| ** **                                                  | ** ** | **December 29,** | ** ** | **December 28,** | ** ** | **December 26,** | ** ** | **December 25,** | ** ** | **December 31,** | ** ** | **April 1,** | ** ** |
| ** **                                                  | ** ** | **2006**              | ** ** | **2007**              | ** ** | **2008**              | ** ** | **2009**              | ** ** | **2010**              | ** ** | **2011**          | ** ** |
| **Earnings:**                                               | ** ** | ** **            | ** ** | ** **            | ** ** | ** **            | ** ** | ** **            | ** ** | ** **            | ** ** | ** **        | ** ** |
| Income before income taxes                                  |       | $                     | 50,680     |                  | $          | 83,422                |       | $                     | 65,458     |                  | $          | 43,161            |       | $ | 46,750 |   | $ | 11,413 |   |
| Fixed charges (from below)                                  |       | 38,901                |       | 43,711                |       | 39,218                |       | 29,600                |       | 28,665                |       | 8,780             |       |
| Total earnings                                              |       | $                     | 89,581     |                  | $          | 127,133               |       | $                     | 104,676    |                  | $          | 72,761            |       | $ | 75,415 |   | $ | 20,193 |   |
|                                                        |       |                  |       |                  |       |                  |       |                  |       |                  |       |              |       |
| **Fixed Charges:**                                          |       |                  |       |                  |       |                  |       |                  |       |                  |       |              |       |
| Interest expense                                            |       | $                     | 31,367     |                  | $          | 33,923                |       | $                     | 28,482     |                  | $          | 19,044            |       | $ | 18,710 |   | $ | 6,096 |   |
| Interest in rent expense estimated at 30% of rent   expense |       | 7,534                 |       | 9,788                 |       | 10,736                |       | 10,556                |       | 9,955                 |       | 2,684             |       |
| Total fixed charges(1)                                      |       | $                     | 38,901     |                  | $          | 43,711                |       | $                     | 39,218     |                  | $          | 29,600            |       | $ | 28,665 |   | $ | 8,780 |   |
|                                                        |       |                  |       |                  |       |                  |       |                  |       |                  |       |              |       |
| **Ratio of Earnings to Fixed   Charges**                    |       | 2.3                   |       | 2.9                   |       | 2.7                   |       | 2.5                   |       | 2.6                   |       | 2.3               |       |

 

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(1) Preferred security dividends of Interline New Jersey are excluded from fixed charges as preferred stock is held solely by corporate parent.

 

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**Ratio of Earnings to Combined Fixed Charges and Preferred Dividends**

**(amounts in thousands other than ratios)**

 
| ** **                                                                | ** ** | ** **            | ** **  | ** **            | ** ** | ** **            | ** ** | ** **            | ** **  | ** **            | ** ** | **Three**         | ** ** |
|---------------------------------------------------------------------------|------------|-----------------------|-------------|-----------------------|------------|-----------------------|------------|-----------------------|-------------|-----------------------|------------|-------------------|------------|
| ** **                                                                | ** ** | ** **            | ** **  | ** **            | ** ** | ** **            | ** ** | ** **            | ** **  | ** **            | ** ** | **Months**        | ** ** |
| ** **                                                                | ** ** | **Year Ended**   | ** **  | **Ended**             | ** ** |
| ** **                                                                | ** ** | **December 29,** | ** **  | **December 28,** | ** ** | **December 26,** | ** ** | **December 25,** | ** **  | **December 31,** | ** ** | **April 1,** | ** ** |
| ** **                                                                | ** ** | **2006**              | ** **  | **2007**              | ** ** | **2008**              | ** ** | **2009**              | ** **  | **2010**              | ** ** | **2011**          | ** ** |
| **Earnings:**                                                             |       |                  |        |                  |       |                  |       |                  |        |                  |       |              |       |
| Income before income taxes                                                |       | $                     | 50,680      |                  | $          | 83,422                |       | $                     | 65,458      |                  | $          | 43,161            |       | $ | 46,750 |   | $ | 11,413 |   |
| Fixed charges (from below)                                                |       | 38,901                |        | 43,711                |       | 39,218                |       | 29,600                |        | 28,665                |       | 8,780             |       |
| Total earnings                                                            |       | $                     | 89,581      |                  | $          | 127,133               |       | $                     | 104,676     |                  | $          | 72,761            |       | $ | 75,415 |   | $ | 20,193 |   |
|                                                                      |       |                  |        |                  |       |                  |       |                  |        |                  |       |              |       |
| **Fixed Charges:**                                                        |       |                  |        |                  |       |                  |       |                  |        |                  |       |              |       |
| Interest expense                                                          |       | $                     | 31,367      |                  | $          | 33,923                |       | $                     | 28,482      |                  | $          | 19,044            |       | $ | 18,710 |   | $ | 6,096 |   |
| Interest in rent expense estimated at 30% of rent   expense               |       | 7,534                 |        | 9,788                 |       | 10,736                |       | 10,556                |        | 9,955                 |       | 2,684             |       |
| Total fixed charges(1)                                                    |       | $                     | 38,901      |                  | $          | 43,711                |       | $                     | 39,218      |                  | $          | 29,600            |       | $ | 28,665 |   | $ | 8,780 |   |
|                                                                      |       |                  |        |                  |       |                  |       |                  |        |                  |       |              |       |
| Preferred dividends (calculated below)                                    |       | $                     | —      |                  | $          | —                |       | $                     | —      |                  | $          | —            |       | $ | — |   | $ | — |   |
|                                                                      |       |                  |        |                  |       |                  |       |                  |        |                  |       |              |       |
| Total combined fixed charges and preferred   dividends                    |       | $                     | 38,901      |                  | $          | 43,711                |       | $                     | 39,218      |                  | $          | 29,600            |       | $ | 28,665 |   | $ | 8,780 |   |
|                                                                      |       |                  |        |                  |       |                  |       |                  |        |                  |       |              |       |
| **Ratio of Earnings to Combined   Fixed Charges and Preferred Dividends** |       | 2.3                   |        | 2.9                   |       | 2.7                   |       | 2.5                   |        | 2.6                   |       | 2.3               |       |
|                                                                      |       |                  |        |                  |       |                  |       |                  |        |                  |       |              |       |
| **Deficiency (Surplus)**                                                  | ** ** | **$**                 | **(50,680** | **)**                 | **$**      | **(83,422**           | **)**      | **$**                 | **(65,458** | **)**                 | **$**      | **(43,161**       | **)**      | **$** | **(46,750** | **)** | **$** | **(11,413** | **)** |
| ** **                                                                | ** ** | ** **            | ** **  | ** **            | ** ** | ** **            | ** ** | ** **            | ** **  | ** **            | ** ** | ** **        | ** ** |
| **Preferred Dividends:**                                                  |       |                  |        |                  |       |                  |       |                  |        |                  |       |              |       |
| Preferred dividend amount(1)                                              |       | $                     | —      |                  | $          | —                |       | $                     | —      |                  | $          | —            |       | $ | — |   | $ | — |   |
| Tax rate                                                                  |       | 38.5                  | %           | 38.9                  | %          | 37.6                  | %          | 39.6                  | %           | 40.3                  | %          | 39.7              | %          |
|                                                                      |       |                  |        |                  |       |                  |       |                  |        |                  |       |              |       |
| Preferred dividends                                                       |       | $                     | —      |                  | $          | —                |       | $                     | —      |                  | $          | —            |       | $ | — |   | $ | — |   |

 

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(1)   Preferred security dividends of Interline New Jersey are excluded from fixed charges as preferred stock is held solely by corporate parent.

 

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