ARANA Gas Struts 30 inch 55lb with Brackets (2 Pack) - Heavy Duty Lift Support for RV Bed Hatch & Storage Box Lid - Hydraulic Spring Shocks for Camper Bed, Trap Door, Floor Hatch

Gas struts: ARANA Gas Struts 30 inch 55Lbs... https://www.amazon.com/dp/B0CP1R2DGR?ref=ppx_pop_mob_ap_share You could probably go up to 75 or 80, but 100lbs is too much. It actually broke the box on me when I tried to close it. Lock mechanism: HERNAS Smart Phone APP Unlocking... https://www.amazon.com/dp/B0C6QMLSDC?ref=ppx_pop_mob_ap_share I mounted the doorbell switch under the box and a remote near my seating. It also works with an iPhone app. Also, if you plan to use a sound bar, I recommend accounting for that in the height of the box also, I didn’t and thus had to mount it below.