These are articles that are included in the Propeller, Inc. Knowledgebase.

Propeller now offers Integration for over 30 eCommerce Solutions

You can now connect your eCommerce solution with Propeller.  At Propeller, Inc. we are able to securely connect with over 30 eCommerce solutions, shopping carts, and sales channels. Helping you automate your fulfillment process. With the integration of your eCommerce solution with Propeller, you will be able to automatically send orders, receive shipment confirmations and sync inventory with Propeller, Inc.

We currently support the following eCommerce Solutions:




Amazon Checkout


Big Commerce

Blue Cherry


Channel Advisor


CommerceHub OrderStream







Groupon Goods




Lightspeed Retail









SPS Commerce



Uniware Clear Connect





If your eCommerce solution is not listed call us, chances are we either have you eCommerce solution in development or listed on our website.


What is 3PL?

What is 3PL? A 3PL (Third Party Logistics) provides outsourced logistic services, The term is rather broad and generally applies to the storing or shipping of goods.

There are two types of 3PL, Asset Based & Non-Asset Based. Asset Based 3PL’s have the infrastructure to handle the physical requirements of a logistics operation, such as Order Fulfillment, Inventory, Pick & Pack and Shipping. Non-Asset based 3PL provides the network of brokers, vendors & carriers to ship goods between multiple locations, such as freight forwarding & freight brokerage. Many 3PL’s have attributes in both Asset Based & Non-Asset based logistics.

Who needs a 3PL (third party logistics)?

Most successful companies are good at Sales & Marketing, a 3PL is good at handling your logistical and fulfillment needs. You lack the resources, capital or infrastructure to run your own fulfillment & logistics operations. It takes a lot of time to handle your own logistics, fulfillment & shipping, Having a 3PL as your logistics provider helps you focus on what keeps your business running.

Propeller is not just another 3PL.

Propeller, Inc. is a full-service 3PL providing order processing, warehousing, shipping, kitting and assembly, packaging, invoicing (including EDI), returns management and materials procurement. Our staff are your employees, Propeller has the expertise to keep your fulfillment process running smoothly. With Propeller, you can use our shipping volume and our relationship with vendors & carriers to provide cost savings to you.

What is an ECT?

There are currently two tests in the industry that determine cardboard strength, represented by a round or sometimes square stamp on a flap of the box that shows the manufacturer follows the rules and regulations of the United States Commerce Commission. For a long time the accurate test for cardboard, or corrugated fiberboard, was the Mullens Burst Test. The Bursting Test is a measurement of the force required to puncture or rupture the face of the cardboard. Once a result is found the board gets a rating. A very common rating is 200#. The other test is relatively newer and in some cases is the preferable test.

The ECT or Edge Crush Test is a laboratory test that compresses a small piece of board edgewise between two plates until a peak force is reached. This is measured in pounds per inch (lb/in), but usually shown as an ECT value, for example 32 ECT.


A Mullens 200# and ECT 32 are widely viewed as being interchangeable. However they both have their advantages. Every fiberboard has a specific “Recipe” that effects the strength, weight, thickness, and other special properties. The Mullens test however requires that the stock meet certain weight requirements to achieve a higher rating. This gives you a more rugged box but at the cost of weighing more. The ECT has no such weight requirements but is held strictly to the crushing strength of the cardboard. This means that a manufacturer with a great “Recipe” and design can produce an ECT box as strong or stronger as a similar Mullens box, but also cutting the overall weight.