Description Overview Two right-hand sewing heads operating in over and under technique Border width from 3.5 to 21 inches (89 to 533 mm) Increased material capacity to 40 inch (1 m) rolls Ability to idle one sewing head when necessary Serged borders feed directly to a variable tension winder Independent sewing drives, eliminates clutch and jack shaft Specifications Max sewing speed: 6000 rpm Recommended sewing speed: 5000 rpm Max border thickness: 1/2 inch (127 mm) Min panel thickness: flat Border width: 3.5 to 21 inches (89 to 533 mm) Stitches per inch: 5 Yield: 40 +/- yards per minute (36.5 +/- meters per minute) Needle type: DC x 27 Needle size: 21 Voltage: 220 (alternative voltages available) Current: 15 amps Air pressure: 80 psi Air consumption: 4 cfm Weight (gross): 1360 lbs / 617 kg Shipping dimension: 124 x 57 x 75 inches (3150 x 1450 x 1900 mm) Material: up to 1/2 inch (12.7 mm) Speed: 6000 rpm at 4.5 spi Footprint: 54 x 90 inches (1300 x 2300 mm) Yield: 40 +/- yards per minute Heads Head a: Porter double head, model PE 50400 Head b: Porter double head, model PE 50400 Maintenance Maintain your machine with quality OEM machine parts and save money doing it Choose these quality parts kits specifically designed to keep your Porter equipment operating at peak performance