M4 Sherman Variant ID

	A	B	C	D	E	F	H	J
1		Glacis	Hatches	Rear	Engine deck	Engine door
2	M4 75mm	57°	Small protruding	Inverted U	Forward louver	2 doors	Alco, Baldwin, Pullman, PSC
3	M4 Composite 75mm	Cast	Small or Large	Inverted U	Forward louver	2 doors	Chrysler
4	M4 105mm	47°	Large	Straight across	Forward louver	2 doors	Chrysler
5	M4 105mm HVSS	47°	Large	Straight across	Forward louver	2 doors	Chrysler
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7	M4A1 75mm	Cast	Small	Inverted U	Forward louver	2 doors	Lima, PC&F, PSC
8	M4A1 75mm transitional	Cast	Large	Inverted U	Forward louver	2 doors	PSC
9	M4A1 76mm	Cast	Large	Straight across	Forward louver	2 doors	PSC
10	M4A1 76mm HVSS	Cast	Large	Straight across	Forward louver	2 doors	PSC
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12	M4A2 75mm	57°	Small protruding	Tall "T"	Small grille	None	Alco, Baldwin, Federal, Fisher, Pullman
13	M4A2 75mm transitional	47°	Large	Tall "T"	Small grille	None	Fisher
14	M4A2 76mm	47°	Large	Tall "T"	Small grille	None	Fisher
15	M4A2 76mm HVSS	47°	Large	Tall "T"	Small grille	None	Fisher, PSC
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17	M4A3 75mm Dry	57°	Small protruding	Tall "T"	Large grille	1 door	Ford
18	M4A3 75mm Wet	47°	Large	Tall "T"	Large grille	1 door	Fisher
19	M4A3 75mm HVSS	47°	Large	Tall "T"	Large grille	1 door	Fisher
20	M4A3 76mm	47°	Large	Tall "T"	Large grille	1 door	Chrysler
21	M4A3 76mm HVSS	47°	Large	Tall "T"	Large grille	1 door	Chrysler
22	M4A3 105mm	47°	Large	Tall "T"	Large grille	1 door	Chrysler	Has doorstop on sides of engine deck; the M4 105 does not have this
23	M4A3 105mm HVSS	47°	Large	Tall "T"	Large grille	1 door	Chrysler
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25	M4A4 75mm	57°	Small protruding	Short "T"	Forward grille	2 doors	Chrysler
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