4 Pack U Post Base for 1-5/8″ Single Strut Channel, U Floor Ground Silver
Compatibility: Suitable for 1-5/8”strut channels, it is an ideal choice for installing structures such as fences and sheds. There are 2 adjustable slots （1-5/32”x 1/2”） on the base, and 6 bolt holes (1/2”) on the column, which can accept 1/2” bolts.