That’s a cool habitat. I think if you browsed around several websites that have habitat designs for sale, like Leith Petworks, or The Busy Bunny and look for ramps that are sold as separate attachments you may find one that works for you here. I still like a ramp. Possibly other posts here have described home-made ramps you can create yourself. Like an untreated pine thin piece cut to size, and covered with the corrugated cardboard run that goes with a Cottontail Cottage?
Check out the photo section for other ramp ideas.

Here is a 32in. long ramp. But they don’t say how wide it is. :/ I am wondering if their is a way to contact the company and ask for exact measurements.
http://www.leithpetwerks.com/prodpage.cfm?prod_code=CP200

hahaha looks like someone is a celebrity

Haha…. Yup!

That hutch is gorgeous! Are you planning on keeping your buns indoors or outside?

We needed a ramp for our buns condo so we just took a piece of untreated plywood from Home Depot and covered it with indoor/outdoor carpeting for traction for the buns feet and to cover up anything that could cause a sliver. All together it was really cheap, only a couple of dollars really depending on how big you need to make it.