eBay
PASSIVE RADIATOR

Same style passive radiator that is featured in the Bose Soundlink Mini and perfect for your home DIY project(s). As seen in the picture, the unit measures approximately 3 1/3"x 1 1/2" (84.7mm x 39.5mm). See photos of the actual product's front, back and the measurements. If you buy more than one, I'll combine as many as I can in one shipment to save you money on shipping.