Metal Generator Box Soundproofing Kits (RVs, Travel Trailers, and Semi Trucks)

* Made In USA*

Little machines can create a lot of noise. We don't need to tell you that - you wouldn't be here if you didn't have a loud little machine driving you crazy.

We use 3 different materials to soundproof a generator box, which you can combine based on the space available in your generator box and the desired results.

How Much Quieter Should I Expect the Box to Be? 

How Big are the Box Soundproofing Kits?

Standard Kit Size - enough material for a box that's 3' L x 2' W x 2' H

Large Kit Size - enough material for a box that's 4' L x 2' W x 3' H

If you have a small metal generator box (some exterior boxes are 2' x 1' x 1.5'), you will only have space for Damplifier Pro. Get a Damplifier Pro Door Kit (13 sq ft) and install it with 100% coverage inside the box.

How to Measure Your Generator Box

Step 1: Determine if material will be installed on interior or exterior walls of the box. The answer will depend on the amount of space inside your box and whether you can access the back side of the box inside your vehicle.

Step 2: Measure length/width of all box faces that will be soundproofed.  Do not plan to cover any vents or exhaust holes. Soundproofing materials should not be installed on the floor with the generator resting on top.

Step 3: Add up the square footage measurement of each side of the box to get your total square footage.

Soundproofing Kit Material Lists

Standard Metal Generator Box - Interior Install

• Damplifier Pro - 20 Sq Ft (12 sheets, 12" x 20" each, 2mm thick)
• Mega Block - 20 Sq Ft (5 sheets, 24" x 24" each, 1/2" thick)
• Wooden Hand Roller - 1 roller

Large Metal Generator Box - Interior Install

• Damplifier Pro - 36 Sq Ft (22 sheets, 12" x 20" each, 2mm thick)
• Mega Block - 36 Sq Ft (9 sheets, 24" x 24" each, 1/2" thick)
• Wooden Hand Roller - 1 roller

Standard Metal Generator Box - Exterior Install

• Damplifier Pro - 20 Sq Ft (12 sheets, 12" x 20" each, 2mm thick)
• Luxury Liner Pro - 27 Sq Ft (3 sheets, 24" x 54" each, 3/8" thick)
• Wooden Hand Roller - 1 roller

Large Metal Generator Box - Exterior Install

• Damplifier Pro - 36 Sq Ft (22 sheets, 12" x 20" each, 2mm thick)
• Luxury Liner Pro - 36 Sq Ft (4 sheets, 24" x 54" each, 3/8" thick)
• Wooden Hand Roller - 1 roller

Standard Metal Generator Box - Interior + Exterior Install

• Damplifier Pro - 20 Sq Ft (12 sheets, 12" x 20" each, 2mm thick)
• Mega Block - 20 Sq Ft (5 sheets, 24" x 24" each, 1/2" thick)
• Luxury Liner Pro - 27 Sq Ft (3 sheets, 24" x 54" each, 3/8" thick)
• Wooden Hand Roller - 1 roller

Large Metal Generator Box - Interior + Exterior Install

• Damplifier Pro - 36 Sq Ft (22 sheets, 12" x 20" each, 2mm thick)
• Mega Block - 36 Sq Ft (9 sheets, 24" x 24" each, 1/2" thick)
• Luxury Liner Pro - 36 Sq Ft (4 sheets, 24" x 54" each, 3/8" thick)
• Wooden Hand Roller - 1 roller

Installation Photos

Damplifier Pro installed with 100% coverage on the exterior of a generator box to deaden structural noise. Damplifier Pro can be installed on the interior or exterior.

Mega Block installed on the interior of a metal generator box to absorb and muffle airborne noise. Mega Block should always be installed inside the generator box.

Luxury Liner Pro in the process of being installed on the exterior of a generator box on top of Damplifier Pro with the foam side facing down. Luxury Liner Pro substantially increased the airborne noise blocked by metal. Tape the seams and cover 100% for best results.