Clestra Modular System Pvt. Ltd. Offers Composite Blog Office Partitions. Clestra Modular System Pvt. Ltd. Is ISO 9001:14001 and OHSAS 18001 registered organization. The Composite Blog Office Partitions are of 83 mm thickness and is mounted onto an internal frame. These office partitions are solid or glazed and demountable. These are constructed out of two independent sides which facings can be up to 16 mm thick to provide high acoustic performance. The design of Composite Blog Office Partitions allows the appearance of the facings to be altered as desired by using a variety of colors and formats. Solid elements can be mixed with glazed elements.