Enhance your Open Frame Rack-111 with a top that allows you to fight debris and dust while maintaining the ability to pass through cables. The closed top is particularly useful for short racks as it allows for additional storage space which would typically not be available on an open frame rack. Taller racks which are typically more likely to need cable pass-throughs can benefit from the same ease of access while being covered as much as possible. The cable pass-through model will include caps for the holes allowing you to cover those that aren't needed. Having one hole on each corner of the top means that your cables can be routed in the most efficient way regardless of your setup.