Thank you, Tim, and good morning, everyone. Turning to Slide 6, our third quarter consolidated gross profit dollars increased by $5.2 million or 13.5%, and our gross profit margin improved 160 basis points to 28.6%. Our gross profit increase was driven by pricing gains of $3.8 million, as well as volume and mix of $2.6 million. The South African acquisition completed in December of last year added $600,000 of gross profit to this quarter. We also had lower product liability costs of $600,000 compared to 1 year ago. Material inflation reduced gross profit by $1.5 million, and productivity was slightly negative due to our December shutdowns and a favorable inventory adjustment that happened last year. Additionally, foreign currency translation had a $600,000 negative impact on gross profit this quarter.
On Slide 7, selling expense increased 2.6% from the prior year in dollar terms and represented 10.7% of sales this year compared to 11.2% last year. The increase in selling cost is primarily related to the new sales offices that we have established in Turkey, North Africa and the United Arab Emirates as well as the incremental selling costs from the South African acquisition. In addition, foreign currency translation had a favorable impact on selling expense of $400,000 this quarter. G&A expense increased $1.1 million compared with the prior year, representing 8.3% of sales versus 8.1% in the prior year. About $600,000 of the increase was related to a favorable pension adjustment in last year's third quarter which did not occur again this year. Other increases were due to investments for growth in the Asia Pacific region as well as general inflationary increases. We expect our SG&A run rate to be approximately $30 million per quarter going forward.
Turning to Slide 8. Operating income increased by 18.2% to $14.2 million or 9.3% of sales compared to 8.4% of sales in the previous year. The improvement in operating income is being driven by the net pricing gains over materials inflation, as well as higher sales volume and mix more than offsetting SG&A increases previously discussed. Excluding the gain on the sale of a closed facility that happened in the prior year, operating income expanded 34.7%.
As you can see on Slide 9, income per diluted share for the third quarter of fiscal 2013 was $0.49, reflecting a $0.05 increase from the prior year period where we reported earnings of $0.44 per share. The effective tax rate in the quarter was 11.1% versus 16.4% in the prior year period due to the mix of earnings in the U.S. versus our foreign affiliates and the fact that we have a valuation allowance against our deferred tax assets in the U.S. On a pro forma basis, using a 38% tax rate, earnings per share in the third quarter of fiscal 2013 were $0.34 per share versus $0.32 a share in the third quarter of fiscal 2012. Our effective tax rate for fiscal 2013 is expected to be between 13% and 17% based on the geographic mix of earnings that we anticipate.
On Slide 10, we have compared our year-to-date performance for several key metrics. Year-to-date revenue was up 4.7%, largely driven by volume and price increases offset by $16.3 million of unfavorable foreign currency translation. Excluding the impact of foreign currency translation, revenue was up 8.5%. Gross profit is up 14.6%, and gross profit margin has expanded 250 basis points to 28.7%. Higher volumes and net pricing over material inflation, along with manufacturing efficiencies, drove the margin expansion. Year-to-date operating income is up 26.5% as a result of the additional gross margin. Operating leverage for the first 9 months of the year is 41.1%. Finally, year-to-date earnings per share are $1.34 versus $0.92 in the previous year.
Turning to Slide 11. Our working capital, as a percent of sales, decreased to 17.5% in the current quarter from 17.6% at March 31, 2012. More importantly, our working capital as a percent of sales declined from 19.4% in our fiscal second quarter. The decline from the fiscal second quarter is due to improved accounts receivables management and better inventory performance. DSOs dropped to 46.7 days in the most recently completed quarter from 51.5 days in the fiscal second quarter. Inventory turns improved to 4.3x compared to 3.7x in the fiscal second quarter. The improvement in inventory turns was due to inventory management initiatives that have been ongoing as well as lower inventory levels associated with projects that shipped this quarter.
On Slide 12, you can see we generated $19.1 million of operating free cash flow in the 9 months ended December 31, 2012. Capital expenditures were $7.1 million versus $10.5 million in the previous year. We expect capital expenditures for fiscal 2013 to be in the $12 million to $15 million range.
Finally, on Slide 13, you can see that as of December 31, 2012, net debt was $40.4 million, and total gross debt was $152.3 million. Net debt to net total capitalization was 17.6%. In addition to having $111.9 million of cash in our balance sheet at December 31, we have an additional $88.5 million available under our new $100 million senior secured credit facility, net of $11.5 million of outstanding letters of credit. This new facility along with our healthy cash balance provide significant liquidity to support our strategic growth plan.
With that, I will turn it back over to Tim to cover the fiscal fourth quarter outlook.