QUIET ZONE ® BOTTOMLESS LIFT MUFFLER
THRU HULL DIFFUSER AND COWLING
FOR UNDERWATER DISCHARGE APPLICATIONS

Linear Series Inline Mufflers
Thin Line Mufflers
Bottomless Bypass Mufflers
Vertical Series Mufflers
Side Kick Mufflers
Genset Mufflers

Would you like to see some examples? Click here for photo gallery

Bottomless Lift Muffler:
Muffler Sound Quality: Normal tone conversation can easily be heard over engine exhaust sound.
Application: Engine room / Hull side positioning.
Very compact ·Very Quiet.
Accepts a wide variety of exhaust system configurations.
Inlet(s) on Muffler are positioned per application requirements.
Surge resistant.
The bottom of muffler must be above the water line.
Material: Biaxial E-Glass/Vinylester, fire retardant (Class 1) Hetron FR 992 resin.
Can be flanged on bottom for ease of installation.
Molded Gelcoat Finish Color: High gloss bright white. Show Quality finish available upon request.
Weight: Light for size - muffler specific.
316L Stainless steel crush resistant rings installed at all muffler hose connections.

Exhaust Thru Hull Diffuser:
Purpose: A predesigned shape that will provide proper exhaust ejection without flow restriction.
Material: Biaxial E-Glass/Vinylester, fire retardant (Class 1)...Hetron FR 992 resin.
Thickness: Approximately 5/32" thick.
Shape is easily inserted into bottom of hull, then laminated to desired thickness.

Underwater Discharge Cowls:
Directs exhaust gas across hull bottom.
Allows smooth exhaust gas exit.
Promotes exhaust gas flow disintegration.
Promotes thin layer gas turbulence which remains close to hull Bottom.
Material: Biaxial E-Glass/Vinylester, fire retardant (Class 1)...Hetron FR 992 resin.

Underwater Discharge Cowl for tunnel and jet drive applications:
Directs exhaust gas out the side of the hull.

WE ARE THE ONLY EXHAUST MANUFACTURER THAT DESIGNS AND FABRICATES BOTH STAINLESS STEEL EXHAUST PIPE(S) AND FIBERGLASS COMPONENTS - SUPPLYING A TOTAL "TURBO TO TRANSOM ® " OR "TURBO TO UNDERWATER DISCHARGE" EXHAUST PACKAGES.

© 2002 #1 Exhaust Systems Boat Marine Yacht Diesel Exhaust