Cullumber Windows manufactures and sells custom storm windows for porches, Cullumber also provides installation service for the windows. The installation process does not involve changes in the windows, so this service can be performed by other vendors. Cullumber enters into the following non-cancellable contract on July 1,2023, with a local homeowner. The customer purchases windows for a price of $2,950 and chooses Cullumber to do the installation. Cullumber charges the same price for the windows regardless of whether it does the installation or not. The price of the installation service is estimated to have a fair value of $693. The customer pays Cullumber $2,457 (which equals the fair value of the windows, which have a cost of $2,200 ) on delivery and the remaining balance on installation of the windows. The windows are delivered on September 1,2023, Cullumber completes installation on October 15, 2023, and the customer pays the balance due. Using the five-step process for revenue recognition, determine when and how much revenue would be recognized by Cullumber. Assume Cullumber follows IFRS. (Round percentage allocations to 2 decimal places, 15.25% and final answers to 0 decimal places, es. 5.275.)