There is an Australia-wide shortage of Monarch spa filters. We have been advised the importer should have them back in around 21 July. Any orders for these will be shipped directly from the distributor.
Unfortunately Astralpool (Hurlcon) has changed the way they supply spare parts. They are no longer kept at the warehouse, and are now "made" to order. Their system no longer shows us what they actually have in stock. We will endeavor to keep as much as possible, but due to their new system some parts may take longer than they used to.