Out of room for your attachments? Adding a shelf helps.

[GS1100GK]

Here is where I keep my grapple and bucket when not needed.

 

[bchendy]

 

[number two]

Sweet!

 

[Tr3kker]

Here is where I keep my grapple and bucket when not needed.

I'll be stealing that idea!

 

[Mrsig]

Thanks for a good idea.

 

[Tinhack]

I'm reserving comment until I see the supports. I think my grapple would collapse that, wall and all.

 

[Smokeydog]

Nice

 

[Jchonline]

My grapple is 920 lbs, my bucket is 7 feet wide… the rear blade is 850 lbs….Do they come in concrete reinforced with steel

 

[Bearsixty7]

I'm reserving comment until I see the supports. I think my grapple would collapse that, wall and all.

OP's grapple is only a 55" or so and only weighs about 250lbs.
My EA 60" weighs 440lbs so it wouldn't require a lot of extra support. If you have a bigger grapple then yes, you would need some serious supports.

 

[ruffdog]

I would want a diagonal brace going down to the sill plate just to make it stronger. There will come a time when engaging or disengaging the grapple to the tractor doesn't go as planned and extra weight is applied to the shelf. It is nice to stack items to make more room though.