2-inch Track - Minimum Clearances
Headroom: Doors up to 10 feet high - 20 inches
Side Room: 4-1/2 inches, each side
Backroom: Door height PLUS 25 inches

3-inch Commercial Track - Not available for this radius

2-inch Track - Minimum Clearances
Headroom: Doors up to 10 feet high - 32 inches
Side Room:4-1/2 inches, each side
Backroom: Door height PLUS 30 inches

3-inch Commercial Track - Not available for this radius

3-inch Low Headroom - 2" TRACK - Minimum Clearances
Headroom: Doors up to 12 feet high - 7 inches
Doors up to 14 feet high - 9 inches
Side Room:6 inches, each side
Backroom: Door height PLUS 32 inches

3-inch Low Headroom - 3" Commerical Track
Not Available in 3" Low Headroom track

6-inch Low Headroom - 2" Track - Minimum Clearances
Headroom: Doors up to 12 feet high - 9 inches
Doors up to 16 feet high - 13 inches
Side Room:6 inches, each side
Backroom: Door height PLUS 32 inches

6-inch Low Headroom - 3" Commercial Track
Headroom: Doors up to 12 feet high - 11 inches
Doors up to 14 feet high - 14 inches
Side Room:6 inches, each side
Backroom: Door height PLUS 32 inches

2-inch Track - Minimum Clearances
Headroom: Door height PLUS 19 inches
Side Room: 24 inches, one side for motor
Backroom:19 inches

3-inch Commercial Track - Minimum Clearances
Headroom: Door height PLUS 19 inches
Side Room: 24 inches, one side for motor
Backroom: 20 inches

2-inch Track - Minimum Clearances
Headroom: Measure from TOP of door to BOTTOM of horizontal door track
Up to 54 inches - Hi Lift PLUS 9 inches
55 to 120 inches - Hi Lift PLUS 12 inches
121-164 inches - Hi Lift PLUS 16 inches
Side Room:24 inches, one side only for motor
Backroom: Door height MINUS Hi Lift PLUS 32 inches

3-inch Commercial Track - Minimum Clearances
Headroom:
Up to 54 inches - Hi Lift PLUS 11 inches
55 to 120 inches - Hi Lift PLUS 13 inches
121-164 inches - Hi Lift PLUS 17 inches
Side Room:5-1/2 inches, each side
Backroom: Door height PLUS 32 inches