Mailboss Post Extension InGround

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Orders over $99

Used for Mailboss in ground post only. 

  • Extends height of the inground mailbox posts by up to 12 inches
  • Bolts directly to all Mail Boss brand mailbox posts ONLY
  • Capable of accepting up to 4 pieces of .6" diameter rebar
  • Includes all hardware for easy and fast assembly
  • Limited Lifetime Warranty
  • Free Shipping by UPS Ground
  • Dimensions: 3.6" L x 3.6" W x 16.4" H