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Which Lippert SolidStep RV Steps Fit 2018 Grand Design 310GK  

Updated 04/27/2026 | Published 04/16/2026

Question:

Grand Design 310GK 2018 Replacing the existinginch 4 step Lippert unit with a replacement due to stress cracks in the aluminum foot treads. The existing steps are 24inch wide and I assume thats been changed. My Lippert DOORinch is 28-7/8inch wide and door flange edgeinch is 28-1/8 wide. so just making sure the LC7911574 is my only option for a wider treadway. I appreciate your attention on this. Thanks!

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Expert Reply:

Hey Steven, thanks for all of the info you listed on your Grand Design 310GK! Based on that the correct Lippert SolidStep RV Steps are the # LC791574 that you referenced. This matches your doorway width and is a 4 step like you have as well. Is your current step setup a fold down setup like this?

expert reply by:
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Jameson C
Rick profile picture

Rick

4/25/2026

Please make sure that you and the supplier are on the same page prior to ordering your steps. We had the misfortune of ordering 3 steps before we received the correct one. Thank You, Rick Bambenek

Jameson C. profile picture
Etrailer Expert

Jameson C.

4/27/2026

@Rick knowing how tall your doorway is from ground and width of your doorway opening is key!

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