Benefits of Round Aladdin Oil Wicks - The model number for all Aladdin lamps is on the end of the wick adjustment knob. Check to make sure you order the proper wick for your lamp. Fits models #23, #23A,#23E60, and MAXbrite 500 series. Will also work for Model 21 if used with the N233 wick raiser. The model number for all Aladdin lamps is on the end of the wick adjustment knob. Check to make sure you order the proper wick for your lamp.. Lasts about 1000 hours. England. Note: If fitting a Model 21 lamp, use #N230 Wick and a #N233 Wick Raiser.