Geraths Windows manufactures and sells custom storm windows for three-season porches. Geraths 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. Geraths enters into the following contract on July 1, 2020, with a local homeowner. The customer purchases windows for a price of $2,400 and chooses Geraths to do the installation. Geraths charges the same price for the windows irrespective of whether it does the installation or not. The installation service is estimated to have a standalone selling price of $600. The customer pays Geraths $2,000 (which equals the standalone selling price of the windows, which have a cost of $1,100) upon delivery and the remaining balance upon installation of the windows. The es installation on October 15, 2020, and the customer pays the balance due Prepare the journal entries for Geraths in 2020. (Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No entry" for the account titles and enter o for the amounts. Round answer to 0 decimal places, e.g. 5,125.) Debit Credit Date Account Titles and Explanation Jul. 1, 2020 No Entry No Entry (To record contract entered into) Sep. 1, 2020 Cash Accounts Receivable Unearned Service Revenue Sales Revenue (To record sales) Cost of Goods Sold Inventory (To record cost of goods sold) 15.2020 Cash [2000 Unearned Service Revenue Service Revenue Accounts Receivable