PetBird Xpress stocks 1,000's of items including Multi-Cluster. Quality Customer Care is our first priority - try calling us at 800-448-2014. Multi-Cluster orders are processed within 1 day. We ship from three warehouses via Fedex and UPS. PetBird Xpress is your source for quality branded products from PLANET. We don't stock any inferior house brands. We appreciate the opportunity to serve you! Join our 12,000 satisfied commercial and residential customers.