Restructuring costs of $5.1 for the three months ended March 31, 2024 were primarily related to cost reduction actions relative to Howden integration. Restructuring costs of $1.6 for the three months ended March 31, 2023 were primarily related to moving and employee severance costs relative to restructuring at our Beasley, Texas, Houston, Texas and Tulsa, Oklahoma facilities.

We closely monitor our end markets and order rates and continue to take appropriate and timely actions as necessary.

The following table summarizes severance and other restructuring costs, which includes employee-related costs, facility rent and exit costs, relocation, recruiting, travel and other:


	Three Months Ended March 31,
	2024		2023
Severance:
Cost of sales	$	0.3	$	—
Selling, general, and administrative expenses	4.2		0.7
Total severance costs	4.5		0.7
Other restructuring:
Cost of sales	—		—
Selling, general, and administrative expenses	0.6		0.9
Total other restructuring costs	0.6		0.9

Total restructuring costs	$	5.1	$	1.6


	Three Months Ended March 31,
	2024		2023
Cryo Tank Solutions	$	0.6	$	0.8
Heat Transfer Systems	0.5		—
Specialty Products	1.3		—
Repair, Service & Leasing	2.3		0.8
Corporate	0.4		—
Total restructuring costs	$	5.1	$	1.6


Balance at December 31, 2023	$	1.9
Restructuring charges	5.1
Cash payments and other	(2.8)
Balance at March 31, 2024	$	4.2

Balance at December 31, 2022	$	0.2
Restructuring charges	1.6
Cash payments and other	(1.1)
Balance at March 31, 2023	$	0.7