SDS Document Case with Metal Binder Rings - 3.0 Inch Total Spine Capacity - Case Has Two Separate Compartments - Each Compartment has a 1.5 Inch Spine STORE ALL OF YOUR COMPANY'S SAFETY DATA SHEETS SECURELY - the case is completely enclosed to keep out dust and dirt. No additional content other than the case is included. BRIGHT, HIGHLY VISIBLE DESIGN - the SDS area should always be easily seen and this case will fulfill that requirements CASE IS COMPLETELY ENCLOSED - to keep contents safe and organized HOLDS STANDARD 8.5" x 11" PAPER - the case can hold hundreds of sheets on the metal binder rings METAL ROUND RINGS ARE LOCATED ON THE SPINE - the metal rings are standard size and compatible with standard US paper