Sold and Priced as Pair 1" Ferrofluid™ Cooled Dome Tweeter & Highly Efficient 4" Polypropylene Woofer All 1/4"-20 Hardware Inserts Allow Easy Integration of "Off The Shelf" Security Hardware Atlas Sound POLYGUARD™ High Frequency Protection Circuit Color Matched Heavy-Duty Zinc Chromate Plated & Powder Coated "C" Bracket (Included) Five-Year Warranty Screwdriver Adjustable 16-Watt 70.7V/100V Transformer (may be bypassed for 8-ohm operation) TRX WAVEGUIDE™- Constant Directivity Style High Frequency Wave Guide System Weather-Resistant Construction for Year-Round Indoor or Outdoor Use OMNIMOUNT™ Compatible UL Certified, Safety Listed to UL1480A Black