Two trials were conducted to evaluate the influence of manger space allotments on feedlot performance of limit-fed crossbred calves. The experimental diet used in both trials contained (dry matter basis) 10% alfalfa hay, 12% sudangrass hay, 62.5% steam-flaked corn, 3% cottonseed meal, 3% fat, 7% cane molasses and .7% urea and 1.8% mineral supplement. In Trial 1, sixty-four medium-frame crossbred steer calves (234 kg) were used in a 76-d feeding trial. Treatments consisted of four manger space allotments of 15, 30, 45 and 60 cm/d. Energy intake was restricted to allow for a daily weight gain of 1.45 kg/d. Weight gain (kg/d), feed intake (kg/d) and feed conversion averaged 1.51, 6.68 and 4.23, respectively, and was not influenced (P > .20) by manger space allotments. In Trial 2, seventy-two medium-frame crossbred steer calves (295 kg) were used in a 63-d feeding trial. Treatments consisted of three manger space allotments of 15, 30 and 45 cm/hd. Energy intake was restricted to allow a maximum daily weight gain of 1.22 kg/d. Weight gain (kg/d), feed intake (kg/d) and feed conversion averaged 1.20, 6.65 and 5.55, respectively. As with Trial 1, feedlot performance was not influenced (P > .20) by manger space allotments. It was concluded that manger space allotments of greater than 15 cm/hd will not appreciably improve feedlot performance of limit-fed cattle up to a 350-kg body weight. Furthermore, prediction equations in combination with tabular feed standards appear to be adequate for targeting performance of limit-fed medium-frame crossbred calves.