Slam Bags are a great bag, made in the US and very good quality. 

Minimum Height: 
2.9"

Maximum Height:

RE-5: RE, HE, XS-6: RE, HE, XS-7: SS, RE, HE-8:

8"  10"  11"  12"

Diameter:
RE-5: 5.5"
SS, RE, HE, XS-6:  6" (replaces 255C or 2B6 or 2500 lb)
SS, RE, HE, XS-7:  7" (replaces 224C or 2B7 or 2600 lb)
SS, RE, HE-8:  8" (3300 lb)

Pressure Ratings:
SS-250psi. Single 1/2" Port
RE-200psi. Single 1/2" Port
HE-400psi. Dual 1/2" Ports
XS-600psi. Dual 1/2" Ports