Track, headroom & clearances

1" (light duty)

Residential, light commercial

Max weightUp to 150 lbs

Inside width1"

Gauge22 ga

Radius12"

2" (standard duty)

Residential, standard commercial

Max weight150–400 lbs

Inside width2"

Gauge20 ga

Radius12" or 15"

2" (heavy duty)

Commercial, industrial

Max weight400–600 lbs

Inside width2"

Gauge16 ga

Radius12", 15", or 20"

3" (commercial)

Large commercial, industrial

Max weight600–1,000 lbs

Inside width3"

Gauge14 ga

Radius15", 20", or 27"

3" (heavy commercial)

Heavy industrial, high-cycle

Max weight1,000+ lbs

Inside width3"

Gauge12 ga

Radius20" or 27"

References & standards

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