Groves Heavy-Duty Bundle Rack – Long Product Description The Heavy-Duty Bundle Rack is designed to utilize its 90″ rails for jumbo size stone bundles! Features Heavy-duty powder coated finish Rails built with 2.5" square holes spaced 5" apart. A steal plate with identical holes is welded and boxed inside the rail, 1" up from the bottom 2.5" square tubes posts and 2.5" square rubber post caps to separate bundles and slabs Must have a 12” overhang on each side 90" Rails are designed with slots to hold 2 x 4’s which protect the slab edges and the finish on the rails (2 x 4s not included) Complete with 11" connector tube for butting rails together in a straight line for desired length PATENT #: 7143901 Specifications Product Documents General Use & Safety Guidelines Bundle Rack Assembly Instructions Safety Warnings Use .5″ holes located on bottom flange for securing rails to the floor Maximum weight allowed per opening is 9,000 lbs. (4,500 lb. per post) Minimum of 2-degree angle when dropping stone in between posts When assembled the overall height of the posts are 5.5” less then listed (EXAMPLE: 72” post will be 66.5” above the top of the rail)