Field Guardian 100 Pack T post Electric Fence Insulator Front Loading Mailboxes 75 in x 36 in Assembly Assembly 75 in x 36 in Assembly Assembly required Baluster Material Aluminum Baluster Style Round Balusters Included Yes Cable Included No Material Aluminum Maximum Opening (Inches) 72 Minimum Opening (Inches) 72 Orientation Vertical Package Quantity 23 Post Caps Included No Post Sleeves Included No Posts Included No Pressure Treated No Rails Included Yes Total Number of Pieces 23 Warranty 25 year limited CA Residents: Prop 65 Warning(s) Yes UNSPSC 30103600 Frequently Asked Questions (FAQ): Flexco Rustic Solid Wood Threshold and polyropes up to 3 8'' Q: Will these insulators withstand harsh weather conditions