SOSS 218PT Invisible Power Transfer Hinge 2.5 amp - 20 Minute Fire Rating Minimum Door Thickness: 1-3/4 in.
SOSS 220ASPT Invisible Power Transfer Hinge 2.5 amp at 24vDC - 90/180 Minute Fire Rating Minimum Door Thickness: 2 in.
SOSS 220PT Invisible Power Transfer Hinge 2.5 amp - 20 Minute Fire Rating Minimum Door Thickness: 2 in.
SOSS 220SSPT Invisible Power Transfer Hinge 2.5 amp at 24vDC - 90/180 Minute Fire Rating Minimum Door Thickness: 2 in.
SOSS 418PT Invisible Power Transfer Hinge 2.5 amp at 24vDC - 90/180 Minute Fire Rating Minimum Door Thickness: 1-3/4 in.
SOSS 418SSPT Invisible Power Transfer Hinge 2.5 amp at 24vDC - 90/180 Minute Fire Rating Minimum Door Thickness: 1-3/4 in.