The listing is for one single woofer. This unit is used in all B&W Zeppelin Air speakers. The woofer is in perfect condition and sounds great. Please ask if you want to see anything in details. I will try to make more close-up photos upon request. It will be packed very carefully using multilayer cardboard for safe travel all around the world. Please ask if you need any other used B&W genuine parts. I might get them for you. MS06
eBay