Frequently Asked Questions

For the Windmaster® curb signs, what is the difference between “Classic” and “V4”?

The “Classic” has square, mitered corners. All fours rails will open to load and unload posters. The “V4” has black molded, round corners which eliminate corner points. It has a completely enclosed top which provides maximum moisture resistance. The two side rails open to load and unload posters. The top and bottom rails are stationary.

Why are my overlays green or blue?

Our overlays are shipped with a protective cover on the front and back to prevent damage that may occur during shipping. Covers can be green, blue or clear. To remove the cover simply peel back one of the corners to reveal a clear overlay. Repeat on reverse side.

Can I cancel my order?

We will make every effort to stop the processing of your order if it has not shipped. We cannot cancel an order that has already shipped. To cancel your order, please contact customer service at 800-228-8925. Customer Service hours are Monday-Friday 8:30 am to 5:00 pm EST. Outside business hours, you can contact us via email at

Can I return the items I ordered?

Returns on unused stock products will be accepted within 30 days of delivery. All materials returned will be charged a 20% restock fee. Items to be returned must be repacked and returned in their original cartons. The customer is responsible for the initial shipping charges and all return shipping charges. We do not accept returns on custom orders. Call Customer Service at 800-228-8925 for a return authorization number. Credit will be issued once the materials have been received and inspected.

How do I report a damaged item?

It is the customer’s responsibility to open and inspect all materials at the time of delivery. If damage is noted, please keep all packaging materials and call Customer Service at 800-228-8925. We have a limited time to file a claim with the carrier. Any damage not reported within 5 business days will be the responsibility of the customer.

How do I know if an item is out of stock?

Most items listed on the website are in stock and available for shipping. In the event that there is not enough inventory to complete your order, you will be notified by Customer Service.

When will my order ship?

In-stock items will ship within 1-3 business days, unless you are notified otherwise.

How can I obtain a shipping estimate?

Shipping estimates can be obtained by placing your items in the shopping cart and entering your zip code. You will be quoted an ESTIMATED ground delivery charge as well as expedited options. The actual shipping charges will be calculated and billed once the order has shipped. MDI Worldwide does not mark up freight charges.

What forms of payment are accepted on Web orders?

  • We accept the following forms of payment: Visa, MasterCard, and American Express.
  • If you wish to establish a Net-30 account with MDI Worldwie, please contact Customer Service for a credit application. A minimum order of $250 will be required. The approval process may delay the shipping of your initial order.

When is my credit card charged?

Your credit card will be charged once the item has shipped. Prior to charging your credit card, an authorization will occur for the amount of the order.

Why was I charged sales tax on my order?

  • MDI Worldwide charges sales tax for items shipping to the following states: AZ, CA, CT, FL, GA, IL, KY, MD, MI, NJ, NY, NC, OH, PA, SC, TX UT, and VA. The website will calculate an estimated state sales tax. Any local sales tax will be calculated once your order ships and added to your invoice.
  • If you are tax exempt for your purchases, please check the “Tax Exempt Purchase” box in the checkout. You must either upload your tax exempt certificate during checkout, or fax it to Customer Service at 248-488-5700.

Do you offer price breaks on large volume?

Price breaks start at a quantity of 10 or more units. Please call Customer Service at 800-228-8925, or email for pricing.

What is a standard transit time for materials to ship?

MDI Worldwide is located in Farmington Hills, Michigan. Standard transit within the US is 2 to 6 business days.

Is there a minimum quantity I need to order on stock products?

There is no minimum quantity required for purchase on stock products. Price breaks will start at a quantity of 10 or more units.

What is the warranty on your products?

Most MDI Worldwide materials have a one year warranty against manufacturing defects. This excludes our Postergrip® Lighboxes and LED Lightpanels, which have a 2 year warranty against defects in materials or workmanship.

Do you make custom units?

MDI Worldwide has custom capabilities. Generally, there is a minimum quantity required of 25 units for custom orders. We also have a build-to-order line which allows for small quantities of select units to be made with no minimum requirements. Please call Customer Service at 800-228-8925 for further information regarding custom orders.

Do you offer replacement parts for your units?

MDI Worldwide offers a variety of replacement parts for our units. Please call Customer Service at 800-228-8925 for pricing. Please have the model number of the unit available.

Can you drop-ship my order?

MDI Worldwide is happy to drop-ship. Please provide the ship-to address at the time of checkout. For multiple drop-ship locations, please call CustomerService at 800-228-8925 for drop-ship requirements.

© 2018 MDI Worldwide. All Rights Reserved. 38271 W Twelve Mile Road Farmington Hills, MI 48331. Phone: 248.553.1900. Toll Free: 800.228.8925