Today, we look at the Zalman ZM-F4 135mm Multipurpose Case Fan. I was a bit dumbstruck when I heard this fan is 135mm, a non-standard size, but I soon found out it uses 120mm mounting holes so even the odd size will work for most people. Zalman's ZM-F4 fans come with a 1 year warranty like their other coolers and fans. While not for sale yet, the MSRP is listed at $12.99 for this particular model. Zalman is not a company that readers of Legit Reviews are unfamiliar with. We recently had a look at both of their new F3 Series fans, the ZM-F3-FDB & ZM-SF3. We also looked at the Zalman CNPS9900 MAX 135mm CPU Cooler. The CNPS 9900 MAX and Zalman F3 Series fans use a completely different design to today's sample so we're definitely looking at something new from Zalman. Before we begin, here's a small snippet about who Zalman is if you're not familiar with them;