Check the listing for details. FourJay Industries - 416-TFA5x Speaker NOS Free Shipping Intercom Speaker. Condition: New – Open box. Listed at 74.99 USD. Note: some boxes water damaged From mfg website Tamper & Vandal Resistant Flush Mount Speaker Product Description Designed for schools, prisons and industrial use. Heavy 16 GA stainless steel flush mount grille with brushed finish. Angled edges hide wall irregularities, add strength and resist prying. Assembled design 16 Watt continuous duty horn speaker has 1 1/2" coil, phenolic diaphragm compression driver. Painted stainless steel housing into block wall construction. Hidden wiring access via KO's in box sides and back. Includes stainless steel spanner-head tamper proof assembly screws. Product Technical Specifications Stainless steel grille cover Tamper proof attaching screw Pleasing appearance Compression driver 16 Watts power 25/70 Volt line transformer Speech intelligibility Protected housing