OEM lifts are old and some have no pressure. After a thorough OEM evaluation, on August 30th I ordered two of these for a trial fit. I had to estimate pounds of pressure or drag because I have no idea what OEM elevators are. They fit snugly but are larger in diameter than the OEM lift. Rated for 40 pounds? Work the way you should. I have ordered three more sets of the same size for other hatch doors. The application is the side doors of the Winnebago hatch into the RV basement.