Description:

Material: Steel or Stainless Steel , Gcr15 Roller Wheel Bearing, Premium Nylon Roller Wheel-Ultraly Quiet Smooth&Reduce Friction..
Surface: Frosted Black/Silver, Rust Proof; Load-bearing: Maximum 330lbs / (150kg) Each Door..
The clearance from the top the door to the ceiling needs min. 6"; but big wheel rollers needs 8.7"..
Fit Door Panel Thickness: about 1.2"-1.9" / (30mm-50mm)..
It comes with all the necessary accessories for assembling rollers, no track(Includes install instruction). Easy to Install..