Your search for "sound masking generator" revealed the following:
DBB-4: blank filler plates
$17.00Decora-style blank filler plates for unused positions in 19" panels with Decora-style holes.
RPAK-810-72: 8" Dual Cone (In-Ceiling Speakers)
$131.00New RPAK - One-Box System Pairs with Mtg Accessories For general purpose paging and distributed music, this ceiling speaker kit...
RPSB Series: MAINTAINED CLOSURE WALL-MOUNT SWITCH
$58.00Single pole, single throw (SPST) low voltage switch with MAINTAINED CLOSURE to activate equipment connected with a remote power control...
iMount 12inch 150W - IM12P Series 3cu.ft.
$845.00The 12 inch 150W 8ohm coaxial driver with 38 oz. magnet, 2 in. voice coil, and coaxially mounted compression driver...
AVLELEC-MA-30
$465.0030W mixer/amplifier with 4 ohms, 8 ohms, 25V and 70V speaker outputs at screw terminals. Powered by 120VAC 60Hz, the...
iMount 12inch 150W - IMC12P Series 2cu.ft.
$794.00The 12 inch 150W 8ohm coaxial driver with 38 oz. magnet, 2 in. voice coil, and coaxially mounted compression driver...
DS-805 SERIES: 8" 12W Speakers (5 Pack)
$727.00Economical speaker for background music and paging includes 8 in. 12W dual cone driver, 70/25V transformer, backbox and grille. White...
AVLELEC-MA-60
$685.0060W mixer/amplifier powered via switchable 115 or 230VAC @ 50/60Hz or 24VDC. Includes five channel volume controls, treble and bass...
SBL: storage box with lock
$132.00The SBL Series rackmount storage box is designed to house loose tools, equipment and accessories. Features fully welded 16-gauge steel...