Assume that a company uses a standard cost system and applies overhead to production based on direct labor-hours. It provided the following excerpt from the standard cost card of its only product:

Standard HoursStandard RateStandard CostFixed manufacturing overhead2 hours$5.50 per hour$11.00

During the most recent period, the following additional information was available:

• The total budgeted fixed overhead was $285,000
• The fixed overhead volume variance was $4,200 F

How many units were produced during the period?