Heavy-duty powder coted finish Rails designed with slots to hold 2 x 4’s which protect the stored product and the finish on the rails (2 x 4s not included). Optional Easy Slide (made of low friction material) can be mounted to the 2 x 4’s for extra protection Center rail with easy slide must be used to support the glass when sliding individual lites in and out of the rack Outside rails built with 2" square holes spaced 4" apart. A steel plate with identical holes is welded and boxed inside the rails, 1" up from the bottom 2" square tube posts and 2" square rubber post caps to separate glass Complete with 11" connector tube for butting rails together in a straight line for desired length Patent # 7143901 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 lbs. 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: 60” post will be 54.5” above the top of the outside rail)