Blox height extensions fasten directly on top of RTB01 to bring Blox to a 6'' overall height. XTB02 allows for a 250 lb. maximum load when mounted onto Blox and 100 lb. maximum when elevated on threaded rods.

Roof Top Blox® Blox Height Extension, Polypropylene Copolymer, Domestic

• Molded of UV resistant polypropylene
• Notched saddle-top design for easy pipe alignment
• Reinforced screw starter guides
• Mount directly to RTB01 for 6 in piping height requirements
• 1-1/2 in H extension
• 100 lb/45 kg maximum loads when directly mounted to blox or when elevated on threaded rods
• #10 screws provided or elevated with extension rods

• Catalog https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/IPS_80610_Catalog.pdf
• Specification Sheet https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/IPS_80603_Specification_Sheet.pdf