There's a little confusion with this one, but it APPEARS that www.cddimensions.com is offering a 100% free shipping sale through 3/28. The confusion is:
The email title says 5% off, but the body of the email replaces that with free ship several times (free ship would be a bigger discount in most cases)
There is no coupon code.
I went through most of an order without finalizing & it did show a shipping charge.
Their # is 888-395-6396 if you want to call & check before ordering. With the free ship their pricing is pretty competitive. I will likely do so if my finances permit.