Sliding door tandem roller
  AR-50 
 - Conform to AAMA
- Housing material: steel or stainless steel 
- Bearing material:  steel, nylon or stainless steel 
- Bearing diameter: 1-1/8", 1-1/4" or 1-7/16"
 (28.5mm, 32mm or 36.5mm)
- Housing dimensions:   width:0.68"     height:1.16"
- Standard mounting tabs available