The majority of Lowe’s products have a 90-day return policy wherein you are only allowed to return the item during this period.
For an online purchase, go to your purchase history and start a return online process before shipping the item back to the shop.
For an in-store purchase, make sure to provide proof of purchase upon return of the item. You may also utilize the return barcode feature as well which can be accessed on the order details page.
Take note that not all items are available for returns, bulk equipment like outdoor power equipment or appliances may have shorter return periods.