You are buying 2 surrounds in this sale. 

This is inverted surround, as is original, that we fitted to DX4, PM6, PM7, EX3 and fits perfectly. We re-surround at least 100 Lowthers in past 25 years

Picture of DX4 driver is only an example we did recently. Obviously this speaker is NOT for sale. You are buying one pair of surrounds.

Surround dimensions:

ID 140mm

IDR 152mm

ODR 175mm

OD 190mm

We also have Lowther voice coils 16 Ohm. Contact us if interested. Will list coils as soon as I can.

Best regards, Total Recoil speaker repair specialist