Everything else is sort of an average that seems about right. Crib blankets & receiving blankets seem to have the biggest variances - there's pretty much every size possible available. I listed the most prevalent. Mattress depths vary widely be manufacturer.
The British thermal unit (BTU or Btu) is a traditional unit of work equal to about 1055 joules. It is the amount of work needed to raise the temperature of one pound of water by one degree Fahrenheit (Physical analogue: one four-inch wooden kitchen match consumed completely generates approximately 1 BTU).
1 BTUS: Plumbers will often specify the heat output you'll need for central heating systems in BTUs and this figure will normally be up in the 1000s. 2  BTU stands for British Thermal Units and is a basic measure of thermal energy, where 1 BTU is the amount of energy needed to heat 1 pound of water to 1 degree Fahrenheit. BTUS: Plumbers will often specify the heat output you'll need for central heating systems in BTUs and this figure will normally be up in the 1000s. 2  BTU stands for British Thermal Units and is a basic measure of thermal energy, where 1 BTU is the amount of energy needed to heat 1 pound of water to 1 degree Fahrenheit.