Gas struts have to exactly match the model number due to different gas strut pressures weight dependant if you are unsure at all please, check your serial number on the back of the bed on the manufacturers plate, or what's app (07785246539) the picture of this or email

These gas struts are to suit the Hapro lumina 3621 these beds do NOT have high pressure facials as in the image and spaghetti lamps instead. The Newton force on the gas struts is 305N the high pressure models are 330N which we also sell at the same price per set. 
We always advise swapping these in pairs, As swopping just one could create inbalance if the existing gas strut is slightly weaker. Any questions please dont hesitate to ask 

2 gas struts in a pack.