What Are the Internal Dimensions of the MORyde RV Cargo Slide Tray part # MR78RV?
Updated 04/16/2026 | Published 04/05/2026
Products Featured in This Question
Question:
We have a 2024 Grand Design Influence 2903RL. When you consider the bay is 30inch wide but has a 4 3/4inch in set it looks like the 90inch x 23inch tray would be the widest fit we could install. Can you clarify that the total width of the tray is 23? And if so what the internal width is? We want to be able to put a Blackstone Griddle which is 21 1/2inch deep on the tray so we can just slide it in and out. Thanks.
asked by: David
Expert Reply:
Hi David,
I called MORyde to check the internal dimensions of the MORyde RV Cargo Slide Out Tray part # MR78RV and they confirmed the internal length is 88.21 inches long and the internal width is 19.84 inches wide.
Considering the Blackstone Griddle, you're wanting to use for the tray is 21 1/2 inches wide this would not fit the internal width of the MR78RV. However, the MORyde RV Cargo Slide Out Tray part # MR87FR has internal dimensions of 88.21 inches long and 22.87 inches wide which would allow just enough space to fit your Blackstone Griddle. The overall length of the MR87FR is still 90 inches and the overall tray width is 26 inches. The MORyde site does say their trays are 1/4 inch less in width than the size listed so that the tray will fit perfecting inside the door opening. Since you mentioned your cargo bay is 30 inches wide the MR87FR should fit with room to spare!
What's your favorite thing to cook on your Blackstone? I've heard great things about them!
Product Page this Question was Asked From
MORryde RV Cargo Slide Tray - 90" x 23" - 2 Way Slide - 60 Percent Extension - 800 lbs
- RV Cargo Slides
- Cargo
- Carpeted Floor
- 60 Percent Extension
- 23 Inch Wide
- 2 Way
- 90 Inch Long
- 800 lbs
- MORryde
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Big Truck Big RV Trailer Jack Foot Scale with Tongue Weight Gauge - 2,000 lbs
- Video: Review of MORryde RV Cargo Slides - Cargo Slide Tray - MR78RV
- Q&A: How Far Above the Mounting Point in an RV is the Top of the Floor on the MORryde RV Cargo Slide Tray
- Shop: MORryde RV Cargo Slide Tray - 90" x 23" - 2 Way Slide - 60 Percent Extension - 800 lbs
- Shop: MORryde Snap In RV TV Wall Mount - Extend/Swivel/Tilt - 35 lb Capacity - Steel
- Shop: Power Mountain Tallboy Off-Road Bottle Jack - 8-1/2" to 37-3/4" Lift - 6 Tons
- Shop: Parkit360 Force Electric Trailer Dolly - 2" and 2-5/16" Hitch Balls - 5,000 lbs
- Shop: MORryde RV Ceiling and Countertop TV Mount - Swivel/Tilt - 25 lb Capacity - Steel
- Shop: MORryde Camping Kitchen with Storage Compartment for Jeep Wrangler
- Search Results: trailer hitch
- Article: Trailer Wiring Diagrams
- Q&A: Does etrailer Carry Furrion Chill Cube w/ Heat Pump to Replace Dometic Duo-Therm
- Shop: Trailer Hitch
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Do You Have a Furrion Chill Cube AC Unit w/a Heat Pump?
- Search Results: trailer tires and wheels
- Shop: Trailer Wiring
- Search Results: trailer jack
- Q&A: How to Replace a Lance 6-Pin Plug w/ a Standard 7-Way Connector
- Article: 30-Amp and 50-Amp RV Service: What's the Difference?
- Search Results: suspension enhancement
- Shop: Brake Controller
- Q&A: What is a #84 Spindle and How Do I Know I Have One On My Trailer?
- Article: 5 Things to Know About Weight Distribution Hitches
- Article: Is It Illegal to Leave My Hitch on My Truck?
- Search Results: trailer wiring
- Shop: Base Plate for Tow Bar
- Video: etrailer RV Slide-Out Topper Comprehensive Review and Installation
- Video: Comparing Portable Flat Tow Braking Systems - Curt RVi and Blue Ox Patriot
- Search Results: trailer lights
Marsha
4/10/2026
I have a 2025 GD Solitude 310GK and my narrowest part of the bay width is the same as yours. I put in a 23” tray and offset it so that I had some space alongside on the cap side. My 17” black stone did not fit in the tray but I was able to put it alongside on its side where the bay is wider on the passenger side (I’m assuming yours is the same). I also was able to put a portable Traeger smoker there too. Also, I purchased the metal risers that come separately and was able to store some flat items underneath the tray.