Riser height 7 ¾ ’’, B10 starter kit with connectors and top extra riser hook straps plus two 2 step extensions with connectors # of steps / risers 14/14 & 14/15, Floor to Floor stair heights 106" to 111" (14 risers) & 114" to 119" (15 risers), Horizontal Run 146", All connecting fasteners with Allen key, parts list and assembly picture instructions included. Package Sizes & Weight 5"x14"x 72" 65 lbs. + two (5’’x 7’’x 25’’ 15 lbs) American customers pay in US $. (no sales tax). All payments including with credit card mare made through Shopify/PayPal.