Currently, the Denneroll is available in three sizesâfor tall or flexible adults (gray Denneroll), average or stiffer adults (white Denneroll), and small adults or pediatric patients (gold Denneroll)âthe Denneroll Cervical Orthotic Device is an important addition to your patient-care inventory.
Length of time to keep, and why:Seven years. 1  The IRS has three years from your filing date to audit your return if it suspects good-faith errors. 2  The three-year deadline also applies if you discover a mistake in your return and decide to file an amended return to claim a refund.
But you can usually toss the supporting documents, such as canceled checks and old receipts, three years after you filed your taxes. That's usually how long the IRS has to audit your return, unless you've left out a big chunk of income. If you have any self-employed income, keep the receipts for at least six years.Keep receipts for major home improvements until you sell the house.ut you can usually toss the supporting documents, such as canceled checks and old receipts, three years after you filed your taxes. That's usually how long the IRS has to audit your return, unless you've left out a big chunk of income. If you have any self-employed income, keep the receipts for at least six years.