Hanger systems and methods
Hanger with swivel arm
Header exhaust adapter
Heat and sound insulation device
Herschel-Quincke tube for vehicle applications
High admittance acoustic liner
High admittance acoustic liner
High efficiency broadband acoustic resonator and absorption pane
High frequency diffusion muffler for gas jets
High performance automotive muffler
High performance muffler
High performance muffler
High performance muffler
High pressure gas vent noise control apparatus and method
High-performance muffler
High-performance muffler
High-performance muffler assembly with multiple modes of...
Hollow plastic product having a sound attenuator
Hollow sound-dampened structure
Housings for flue gas units