Seismic Audio SAJP511B Dual 1/4-Inch Jack Plate for Guitar, PA Speaker Cabinets MODEL: SAJP511B CONTENTS: Steel Dual 1/4 Inch Jack Plate for Guitar or PA Speakers CONDITION: New DIMENSIONS: 5 3/8" x 3 1/2" - Recommended Cabinet Cutout: 4 1/4" x 2 1/4" FEATURES: Two 1/4" Connector Holes