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emailed to CommandStandards@navy.mil
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PERFORMANCE SPECIFICATION
HEATERS, DUCT TYPE, ELECTRIC
This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is
available for use by all Departments and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers electric, duct type heaters used in heating, ventilating, and air
conditioning systems.
1.2 Classification. Electric, duct type heaters are of the following sizes and types as specified in table I
(see 6.2).
1.2.1 Sizes. The sizes of electric, duct type heaters are as follows:
19EH - 3¼- by 6-inch housing 29EH - 12¼- by 30-inch housing
20EH - 3¼- by 6-inch housing 30EH - 15¼- by 30-inch housing
21EH - 3¼- by 6-inch housing 31EH - 12¼- by 42-inch housing
22EH - 3¼- by 9-inch housing 32EH - 18¼- by 30-inch housing
23EH - 3¼- by 14-inch housing 33EH - 16¾- by 42-inch housing
24EH - 6¼- by 9-inch housing 34EH - 15¼- by 56-inch housing
25EH - 6¼- by 14-inch housing 35EH - 24¼- by 42-inch housing
26EH - 6¼- by 22-inch housing 36EH - 21¼- by 56-inch housing
27EH - 9¼- by
22-inch ho
using 37EH - 36¼- by 42-inch housing
28EH - 9¼- by 30-inch housing
38EH - 33¼- by 56-inch hous
ing
1.2.2 Types. The types of electric, duct type heaters are as follows:
Type L - Low Heat Output
Type M - Medium Heat Output
Type H - High Heat Output
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