Can this be used on a engine cover/dog house on a inboard outboard boat

I can't speak for your I/O boat but I used it in my van's engine cover which gets really hot and have had no problem what so ever. Good luck.

Is there enough material to cover two doors

Not unless you have really small doors. The better way to do it is with the "door kit". It consists of 4pcs of 12"x36" and is made for 2 doors. What ever you don't use on the inner door skin you should use on the outer door skin. And don't forget directly behind the speaker. I used 36 sq ft on a 04 f150 with the doors and rear wall including back floor where the dual subs are.

how many sheet would you use for 4 car speaker?

Hi Thank you for the question, and it really depends on how much you want to spend.For example, "I" would use just one of these 32x18 sheets for one door. Applying to the outer door inner panel as well as the door panel for the speaker.This way you will not loose your music to the car next to you, or entertaining everybody you pass.You may look into getting 4 boxes of these and do that, or you can get (2) two door speaker kits (12X12).I would recommend the full coverage for medium to high powered audio systems. Especially if your vehicle is Honda , Toyota, or where the sheet metal is super thin.Thank you for choosing the Wires Zone.

How does it hold up when it gets wet regularly? My jeep leaks...

Water does not effect dynamat at all. Once installed it sticks very well to the metal surface of your vehicle. Just make sure the edges are pressed down well so water can’t seep under it and start the rusting process on your Jeep. Clean the surface well before putting the Dynamat down so it sticks.

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Dynamat Xtreme Hex Pack | Self Adhesive Sound Deadener

Product ID: 264111364

Details

Brand
Dynamat
Item thickness
0.07 Inches
Material
Butyl Rubber
Product dimensions
81.3L x 45.7W
Recommended uses for product
Enhancing in

🔇Reduces road noise & vibrations

🔥Blocks heat & speaker distortion

✂️Thin, flexible & easy to cut

COP 406346

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔇 Drive quieter, cooler, and cooler—because your car deserves the Xtreme touch!

COMPACT POWER PACK - 4 sq. ft. coverage in a sleek, flexible sheet—perfect for doors, floors, and trunks
PEEL STICK DONE - Effortless installation with ultra-sticky butyl rubber backing
TRUSTED BY LEGENDS - Used by top custom builders since 1989 for unbeatable quality
SILENCE YOUR RIDE LIKE A PRO - Cut road noise and vibrations for a serene driving experience
HEAT SHIELD THAT WORKS OVERTIME - Stops heat and speaker distortion so your car stays cool and sound stays crisp

Dynamat Xtreme Hex Pack is a premium self-adhesive sound deadener made from butyl rubber, designed to reduce road noise, heat, and vibrations in vehicles. With 4 square feet of coverage in a thin, flexible sheet, it’s easy to install and trusted by automotive pros since 1989. Ideal for doors, floors, panels, hoods, and trunks, it enhances sound quality and driving comfort while maintaining durability and strong adhesion.

Specifications

ASIN	B00020CAVA
ASIN	B00020CAVA
Best Sellers Rank	#62,815 in Automotive ( See Top 100 in Automotive ) #135 in Automobile Insulation
Brand Name	Dynamat
Coverage	4.0 ft.² (0.37 m²)
Customer Reviews	4.6 4.6 out of 5 stars (468)
Customer reviews	4.6 4.6 out of 5 stars (468)
Date First Available	1 January 2024
Department	Mobile
Global Trade Identification Number	00769103104250
Included Components	Pads
Is Discontinued By Manufacturer	No
Item Dimensions L x W	81.3L x 45.7W centimeters
Item Thickness	0.07 Inches
Item Weight	1 Pounds
Item model number	10425
Manufacturer	dynamat
Manufacturer	dynamat
Manufacturer Part Number	10425
Material Type	Butyl Rubber
Model Number	10425
Number of Items	1
Number of Packs	1
Product Dimensions	55.88 x 12.7 x 7.62 cm; 453.59 g
Recommended Uses For Product	Enhancing sound quality in automobiles
UPC	769103104250
Unit Count	1 Count

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