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Don's bulbs
rare light bulbs and lamps
glossary of termsinformation
definition of: /DTUBE

What is special name suffix "/DTUBE"?

This special name encoding reference means: Double envelope glass tube.

Outer glass tube provides physical protection in case inner glass tube breaks or explodes.

Also, outer glass tube provides safety burn protection to user as out glass tube is much cooler to touch.

reference for this page: /DTUBE