The special surface arrangement of fins or special fin geometry may enhance heat transfer rate. The staggered arrangement of fins is the special fin arrangement which gives enhanced heat transfer coefficient essential due to effective flow distribution. The arrangement selected for the topic is an experimental investigation of staggered fin arrays. They are compared with different fin array. The fin arrangement under study has constant length, width, fin thickness with different fin spacing. The design of fin arrays includes four types of arrangements i.e. continuous, 33.33%, 40% and 50% percentage lengthwise staggering of vertical fin arrays and with 38 and 48mm in height on the horizontal plate. The fin arrays with continues type compared with three lengthwise staggering are investigated experimentally under natural convection for different heater inputs and observations. The average heat transfer coefficients and average Nusselt number are calculated for each array also respective graphs are plotted. The results are presented by the calculation of Nusselt number versus the product of Grashoff number and Prandtl number graphs. Also, the results classified with flow visualization techniques. The work classified with calculating that heat transfer increases with increasing percentage staggering in the staggered arrangement of fins.