Container Inserts: Side Walls

Product Overview

The corrugated ridges of shipping containers have varying sizes and dimensions for the walls and ceilings. Sidewalls include 30 inserts per box. The inserts are a part of a comprehensive approach of insulating a shipping container.

  • 1 (SWI- Side Wall Inserts) – 4’ (30 pcs.) 
    • (15) 8′ long insert =120 Lineal Feet of inserts


1 box contains 30 Sidewall Inserts (120 Lineal Feet of Inserts )


Side Wall Inserts fit the indented space in the container’s long side wall where the weld seams are 44″ on center. It fills the hidden air spaces to reduce where condensation can occur. The inserts are a part of a comprehensive approach to insulating a shipping container’s walls and ceiling. There are 30 side Wall Inserts per box. 

  • Boxes of 30 inserts 4′ long (covers 13 1/2’ lineal of the container wall 8’ high)
    • One side of a 20′ container would need 1 3/4 boxes of the Side Wall inserts
    • One side of a 40′ container would need 3 1/2 boxes of the Side Wall inserts
  • See Measurement Diagram
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Side Wall InSerts

One box of Side Wall Inserts covers 112 Lineal feet of corrugation.

Sidewall Insert Design Details

zip file


48in x 7 3/4in x 1 1/4 in


2.5 sq-ft

R-Value ASTM C518


Closed-Cell, injection-molded EPS 

ASTM C578 Type II

Canadian Standards

CAN/ULC S701 Type 2

Foam Density

1.0 lbs per cubic foot

Features Benefits
  • InSoFast engineered system of continuous insulation is perfectly suited for shipping container fabrication. 
    • Simple to install
      • Why work so hard?
      • Adaptable Attachment
      • No Special Tools Needed
    • Built-in Studs*
      • Engineered Framing Studs 
      • Non-conductive stud framing 
      • No energy penalty for the studs
      • Non corrosive stud…non rusting 
      • Adhesive Application no holes
    • Closed-cell high pressure fused EPS Insulation
    • Engineered for Shipping Containers
    • Lives up to its name: In So Fast

    *The high-strength co-polymer plastic studs on 22-inches centers provide a positive attachment stud for finishing the container. The ribbed dovetails surface provides a cast-in-place adhesive applications against the metal surfaces. 

Side Wall Insert Video

Estimating Sidewall Inserts

Estimating and ordering is simple measure and add together how many lineal feet of infill that your container requires to complete the job. Divide the total lineal footage by 4′ long inserts this will give your the total number of inserts you will need.  Don’t overestimate, cut the inserts can be re-used.

    • (2 Side Wall Inserts = (1) 8′ infill)
    • 1 Box of 30 pcs (15) 8′ long insert =120 Lineal Feet of inserts
Estimating Adhesive


New Look Buy Shipping Container Insulation Panels in Monroe, NC

Green Guard Certified Adhesive:

In Canada the Glue is LePage PL Premium

Estimating Adhesive Quantity

Estimating the amount of adhesive YOU will use has variables beyond our control like condition of your walls and how accurate are you with a glue gun? The example below is for one side wall of a 20′ standard height shipping container you will need approximately 3 tubes of the adhesive. That is in a perfect world. PL Premium 3x adhesive is applied in a ⅜” bead on the backside of the studs onto the ribbed surfaces.  We realize that a 3/8″ bead of glue is very subjective. It is important that there is enough adhesive to squish the dovetails on the back side of the stud when pressed to the container wall. Adhesive follows the “Goldie Locks rule, too much, too little, and just right To verify that enough adhesive is used, press the panel into place. Pull the panel back and check to see if the adhesive has spread out beyond the full width of the stud. It is normal for the panel to “float out” from the side of the container when it is accommodating irregularities in the container walls. Additional adhesive may be necessary in some areas. If you are doing it just right you can expect that 1 large 28-fl oz tube will cover 18 of our 24″ long studs or enough glue at a 3/8″ bead to cover 36 foot long bead of glue. 

Additionally you will have to estimate for glue around openings like windows and doors.

1 large 28-fl oz / 828 mL tube = 18 (24″ studs or inserts)

  • CX-LP 46 (46 studs) = 46
  • 46 ÷ 18 = 2 1/2 tubes of the adhesive
  • CSW (30) = 1 tube of the adhesive
LOCTITE® PL PREMIUM® POLYURETHANE CONSTRUCTION ADHESIVE Rough estimate for  28 ounce tubes of adhesive required
Container Side Wall  End Wall Ceiling  Total Walls & Ceiling Floors Swing Doors Total Estimate
20′ Container – Standard 2 1/2  6 1/2 13 7 3 23
20′ Container – High Cube 2 1/2  6 1/2 14 7 3 24
40′ Container – Standard 6 2 1/2  13 28 14 3 45
40′ Container – High Cube 2 1/2  13 29 14 3 46

Important Notice: Container Surface Temperature Applications

When bonding EPS and XPS foam insulation, use above 40°F (4°C) and avoid cure and surface temperatures above 90°F (32°C). Surfaces must be clean, dry and free of frost, grease, dust and other contaminants. Pre-fit all materials and protect finished surfaces. If using cartridge format, cut nozzle at a 45° angle to desired bead size and puncture inner seal. Be very careful not to allow Loctite® PL® Premium to cure on a finished surface.

Cold Weather Tips:  

Interior Installation of a Shipping Container

In cold conditions below 40°F (4°C), heating the interior space of the container will not be sufficient for the adhesive to cure. The insulation panels will not allow heat to transfer to the container’s bonding surface.  It is recommended to either move the container to a heated area or tent and heat the exterior until the adhesive cures.

Exterior Installation

The interior of the container can be heated until the adhesive has cured.

Interior and Exterior Installation

Install the exterior panels first while heating the interior.  Allow adhesive to cure before installing interior insulation.

Overview / Features / Technical Data / Directions

Shipping, Purchasing & Returns
Can I cancel or modify my order?

Yes but act quickly. To cancel or modify your order contact us immediately at or call 888-501-7899 with your request. However, we cannot guarantee that your request to modify or cancel your order will be granted.

How long do I have to cancel my order?

You can cancel your order any time before it reaches the “In Process Ready to Ship” stage. Once your order is in processed and sent to the fulfillment center, it cannot be cancelled without a processing fee. We strive to have all orders “In Process Ready to Ship” within 24 hours. You have less than 24 hours to cancel your order without any additional fees. If it is past the 24-hour mark and you do not want the items you ordered, you can still return them. See below.

Will I be charged if I cancel my order after it is shipped?

Yes you will be charged in the event of a cancellation. The freight company’s charges for delivery will be assessed. At a minimum you will be charged a $30 restocking fee per box and up to 50% of the cost of the entire order.

No Returns without Authorization.

Authorized Returns are subject to $35 Restocking Charge per box and up to 50% of the cost of the whole order. No Returns after 30 days. No returns from authorized retailer will be accepted, all returns must go through the authorized retailer. Only unopened and unused boxes will be considered for return. No Returns for sales outside the continental US

Credit Issued.

No credits will be issued until the product has been returned and evaluated for condition.

  • Purchases made with a check will be issued a check refund within 30 days.
  • Purchases made with a credit card or debit card will have a credit issued to the same account.
    • Discover® Card, American Express®, Mastercard®, Visa®, gift card, debit at the discretion of InSoFast®.

Please read all the current Shipping, Purchasing & Returns *

Freight Dimensions Weight
We offer free curb side deliveries on all of our orders.

You may upgrade your delivery service for an additional charge. LIFT GATE SEVICE IS AN ADDITIONAL CHARGE. Please read through our shipping and purchasing policies, for more details before placing your order. 

Product Code

Number of Parts

Per Box Dimension

Cubic Feet Per Box

 Weight Per Box




 CSW -Side Wall Inserts

30 pcs 4′ = 120 lnft





12 Lbs

Add R-Value with InSoFast PLUS

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