PBSCo Allenair Flange Mounts

Flange Mount: The NT no tail option is suggested when using the front flange mount. The J2 option is suggested for rear flange mounting as it provides the tail flush with the mounting surface.

Cylinder Bore Size	Standard Flange Mount	OS**(front only) Flange Mount
7/8"	A-129	N/A
1-1/8"	A-129*	A-129-OS
1-1/2"	A-229	A-229
2"	A-229	A-229-OS
2-1/2"	A-329	A-329-OS
3"	A-329	A-329-OS
4"	A-429	A-429-OS

*1 1/8" bore type C cylinders require OS mount or mounting nut on front & standard on rear.

**All single ended OS cylinders take standard mounts or mounting nuts on rear end.

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