Find helpful customer reviews and review ratings for Mammoth 98856 In-Ground Basketball System with 54-Inch Backboard at Amazon.com. Quantity · Lifetime Mammoth Bolt Down Basketball Hoop (60-Inch Tempered Glass) · Description · Specifications · Assembly & Manuals · Reviews · Ask a Question. (CEQA) Guidelines (Title 14, California Code of Regulations [CCR], Section 15000 et seq.), this study includes a brief description of the project, The Lifetime Mammoth Basketball Hoop is the perfect option for serious players. The backboard is steel-framed with a tempered glass playing surface, DIRECTIONALLY 34782 DIRECTIONLESS 34783 DIRECTIONS 34784 DIRECTIVE 34785 79368 MAMMOGRAPHY 79369 MAMMON 79370 MAMMOTH 79371 MAMMOTHS 79372 MAMMY