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.
How long to keep staff records. By law you must keep certain records for a set period of time. However, it is a good idea to keep records for six years to cover the time limit for bringing any civil legal action against you, including national minimum wage claims and contractual claims.owever, it is a good idea to keep records for six years to cover the time limit for bringing any civil legal action against you, including national minimum wage claims and contractual claims.