Comparison : Item # SIB-3000-2330-170, Standard "I" Beams
Item # SIB-3000-2509-349, Standard "I" Beams
Item # SIB-4000-2660-190, Standard "I" Beams
Item # SIB-4000-2796-0326, Standard "I" Beams
Item # SIB-5000-3000-0210, Standard "I" Beams