mirror door roller assembly

Hi; We have 4 full floor to ceiling mirror doors in our condo that are missing or have broken concave track roller mechanisms. I'm looking to replace all 8 (2 per each 4 mirror doors). The roller assembly dimensions are 2 15/16 inches wide (total) with roller adjustment channel width 1 1/2 inches wide, 2 3/8 inches high (not including adjustment screw). The height adjustment unit that tracks inside the "u" channel is 2 inches high, 1 3/8 inches wide and 3/8 inches deep. The screw adjustment has a 1 1/2 by 1/2 by 1/16 inch "L shaped hood" that it screws through to make the adjustment.

I have a WA state address (Zip 98281) that I would ship to. Canadian Visa and Billing info though. Let me know if I can clarify further. Thanks...Bill