Folding Doors Track Set Bi-fold Hercules Plus 1200mm (25Kg/40Kg)
1200mm - 25kg - 40kg - for 2 or 4 door panels. 25kg wheels have a ball bearing per axel. 25kg version: 600mm. 40kg wheels have a ball bearing per wheel. 40kg version: 750mm. 25kg version: 60mm x 18mm.