Used on all B2700, B2900, B2900F, B2907, and B2908 lifts.
If the carriage is not louvered then the lift uses eight of this block per side.
If carriage is louvered then it uses four of this block and four of the 4B36011 blocks per side.
How to determine which carriage your lift has:
Non-louvered carriages have lock dog 4B37081 while louvered carriages use lock dogs with spade bolt 4B37010 attached.
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