Recommendation: RS485 Shield

I purchased an RS485 shield (Linksprite is the brand on there) and need others. An image is attached. Is there one that GHI recommends? I noticed you don’t sell any.

We do not sell any so you can use that or make your own using prototype shield?

The one in the photo is from CuteDigi:
http://www.cutedigi.com/shopping_cart.php?keywords=RS485&sort=2a&osCsid=6a82f5cff0ac06d3a73a0690b7884b59

http://www.cutedigi.com/product_info.php?products_id=4500&osCsid=6a82f5cff0ac06d3a73a0690b7884b59

Edit.
Working link.