"Standard tub" is too vague. More information is needed, especially what the 'tub' is used for? Tub of icecream? Tub of lard? Bathtub? etc.
The size of a Standard video file depends on the size of the media used to create it.
The standard size business letter is called a #10envelope.
What is the standard channel size used by both cable and wireless modems?Read more: What_is_the_standard_channel_size_used_by_both_cable_and_wireless_modems
A bathtub caddy is used for lots of different tasks, such as carrying soap and shampoo in the bathtub. You can also use it to carry other things around.
The standard ball used in FIFA-sanctioned matches is a Size 5.
For a standard size refrigerator, a dedicated 15 amp circuit is used.
20cm
Turpentine will not harm a fiberglass bathtub. Small amounts of turpentine can be used to clean stubborn adhesives in the bathtub.
A standard bath typically holds about 36 to 50 gallons of water, depending on the size and depth of the tub.
The standard nominal mains supply everywhere in the USA is 120 volts AC, 60 Hz.
A "standard". In manufacturing, it may be refered to as a "master" when used to calibrate instruments that measure size, but it is still a standard.