Bi-folding Door Track System for Folding Doors Hercules Plus 3000mm (25Kg/40Kg)
3000mm - 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.