Parker Plastic, Inc., manufactures plastic mats to use with rolling office chairs. Its standard cost information for last year follows:

	Standard Quantity		Standard Price (Rate)			Standard Unit Cost
Direct materials (plastic)	12	sq ft.	$	1.00	per sq. ft.	$	12.00
Direct labor	0.25	hr.	$	12.80	per hr.		3.20
Variable manufacturing overhead (based on direct labor hours)	0.25	hr.	$	2.00	per hr.		0.50
Fixed manufacturing overhead $559,200 932,000 units)							0.60

Parker Plastic had the following actual results for the past year:

Number of units produced and sold		1,260,000
Number of square feet of plastic used		12,500,000
Cost of plastic purchased and used	$	11,250,000
Number of labor hours worked		330,000
Direct labor cost	$	4,026,000
Variable overhead cost	$	1,480,000
Fixed overhead cost	$	387,000

Required: Calculate Parker Plastics variable overhead rate and efficiency variances and its over- or underapplied variable overhead. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for Favorable/Overapplied and "U" for Unfavorable/Underapplied.)