The 6,000 lb quad mast cushion tire warehouse forklift has the highest reach of the forklift models. Because it uses four chambers to fully extend the forklift, it requires more overhead space when lifting materials. The warehouse forklift also requires special training to operate. Although it has a lifting capacity of 6,000 lbs, operators must keep in mind that the forklift can sustain less pressure the higher it’s extended. The vehicle’s tires provide navigability in tight areas with limited space, and are best indoor use.