A modular merchandise display system is provided. The system comprises an enclosure, a first upper bracket and a first lower bracket forming a first pocket on a first side of the enclosure, and a second upper bracket and a second lower bracket forming a second pocket on a second side of the enclosure. A first security door is slidably and pivotally connected to the first upper and lower brackets. A second security door slidably and pivotally connected to the second upper and lower brackets. The security doors can be positioned exterior of the enclosure and then pivoted about the upper and lower brackets to be positioned substantially parallel to the front of the enclosure in a closed position. The security doors can then be secured to one another in the closed position.