Hard Side, High Wall Pop Up Camping Trailer


Offered for sale is this beautiful 2020 Forest River Flagstaff T21DMHW Hard Side High Wall Pop Up Camper. The original owner purchased this camper during COVID and only used it a couple of times. We acquired this camper last year and only used it twice, and found it to be very comfortable, and extremely easy to set-up and tow. There are other models similar to this, but this camper has the sought after private walled bathroom with shower and the front fold-out dormer for extra headroom and usable interior space. .   

When you step inside this Flagstaff Hard Side High Wall Series 21DMHW A-frame by Forest River, you will find a front hard wall shower/cassette toilet. In the front there is also an interior storage area, a single bowl sink, a 3-burner glass top stove with oven, and an XL 3-way refrigerator to keep your perishables fresh. Plus there is a microwave with a cabinet to conveniently keep your bags of popcorn right next to it. When you're ready to wind down your nights, head to the rear and relax on the 60" x 80" flip-up Queen size bed with a quilted memory foam mattress and even a heated mattress pad for those early and late season camping trips, to enjoy a good night's rest!

In every Forest River Flagstaff Hard Side High Wall, you will find a camper that is built with a smooth, fiberglass vacuum bonded exterior, and are quick and easy to set up with the power roof assist. These units are versatile and provide a comfortable interior height along with plenty of storage options between the exterior EZ reach trunk and the interior EZ reach storage with a sliding tray on all front trunk models and under the bed storage. Along the exterior you will also enjoy features like the gas grill with a worktable, the outside speakers, and the patio light for you to see clearly even at night. You will also love the interior design with the stainless steel look appliances, the comfortable booth seating, and the wood laminate flooring throughout!

 Forest River Flagstaff Hard Side High Wall 21TBHW A-Frame highlights:

  • Private, high wall bathroom with inside shower and cassette toilet 

  • Powerful Air Conditioning for those hot summer camping trips 

  • Outside shower 

  • Multiple Exterior Locking Storage Compartments

  • Slatewood Interior

  • Microwave oven

  • 3 burner propane stove

  • Fold Up Steps and grab rail

  • Tongue Jack

  • Powerful, yet quiet ceiling vent fan

Standard & Optional Features:

  • American Maple Interior

  • Wood Look Flooring

  • “Leather Appearance” Seating

  • Stainless Steel Look Appliances and Sink

  • Electric Water Pump

  • Hot Water Package (Incl. Water Filter, Outside Shower, Six Gallon DSI Hot Water Heater, Demand Water Pump)

  • Hard Wall Shower w/ Residential Flush Toilet (T21DMHW only)

  • Antifreeze Inlet to Bypass Fresh Water Tanks When Winterizing

  • Permanently Mounted Indoor 3 burner Range w/Cover

  • Microwave oven

  • Extra Large 3 Way Fridge (T21QBHW, T21TBHW, T21DMHW, T21FSHW Only)

  • Residential Style Cabinet Doors

  • Hanging Wardrobe closet (has this option)

  • USB Charging Ports

  • Digital Media Receiver w/ AM/FM Stereo, Bluetooth, MP3 Player, USB & Aux. Ports

  • TV Outlet with Cable and Satellite Hook Up

  • 30 Amp Detachable Power Cord w/ Storage Bag

  • 35 Amp Converter w/ Built in Battery Charger

  • Three Speed Ventilation Fan

  • 10k BTU Cool Cat Heat Pump

  • 20k BTU Forced Air Furnace w/ Electric Ignition (Optional)

  • Interior Floor Lights

  • Ceiling LED Lights (Hard Sides)

  • LP Leak/Carbon Monoxide Detector

  • Privacy Curtains for all windows and rear skylights

  • Deluxe Memory Foam Quilted Top Bed Mattresses (T21TBHW only)

  • Thermostatically Controlled Heated Mattress (has this option)

  • Independent Torsion Axles

  • Easy Lube Axles

  • Spare Tire, Cover and Mount

  • 14” Radial Tires w/ Aluminum Wheels 

  • Electric Brakes

  • EZ Reach Storage with Sliding Tray All Front Storage Models

  • Gas Strut Lift Assist

  • Power Roof Lift Assist (HW models only, has this option)

  • Front Dormer for better headroom/space (Many models do not have this feature)

  • Built-in A-Frame Mounting Provision for Equalizer Hitch Bar Installation

  • Double Battery Box and Wiring Kit

  • Solar Panel Prep on Frame

  • Dual 20 lb. LP Bottles with Molded Hard Cover and Automatic LP Regulator

  • Diamond Plated Lower Front Cap

  • Outdoor Gas Grill w/ Worktable

  • Outside Speaker

  • Patio Light

  • Courtesy Light on Front

  • 110V Exterior Outlet 

  • Double Door Step 

  • Screened windows throughout

  • Vented Entrance Door Window w/ Screen

  • Folding Grab Handle

  • Exterior Graphic Design 

Standard Construction Features

  • Completely Enclosed Living Area

  • One Piece Vacuum Bonded Fiberglass Roof with Metal Interior Ceiling

  • Large Rear Roof Tinted Sky Light with Shade

  • Two Front Roof Tinted Windows with Shades

  • Smooth White Two Tone Fiberglass Vacuum Bonded Exterior

  • Large, Opening Picture Window

  • One Piece Undercoated Structure Wood Floor

  • E- Coated Tubular Steel Frame

  • (4) E-Z Crank-Down Stabilizer Jacks w/ Sand Pads

  • Under Floor 20 Gallon Fresh Water Tank

  • 2000 lb. Tongue Jack w/ Swivel Wheel

  • Power Front Jack (Optional)

  • 7-Way Pigtail Plug

  • WiFi Ranger WiFi Booster SKY 4

Optional Equipment for this model available from dealers, but not included: 

  • ProRac System for this model camper, which can accommodate kayaks, bicycles, and additional cargo 

  • 40 Watt Solar Panel, the camper is already wired to accept this option. 

  • Awning/Screen Room 

Hard Side Package Includes: 

  • Create-A-Breeze Roof Vent Fan

  • Spare Tire w/ Carrier & Cover

  • CO Detector

  • Stereo w/ Outside Speakers

  • Wi-Fi Booster w/ LTE Prep

  • ProRac Permanent Crossbars (150lb rating)

  • 1.7 CU - 12V Refrigerator w/ 100W Roof Solar Panel

  • 11K BTU Under Bunk AC

  • Water Filter Supplied


  • Length: 20.83 ft. 

  • Height (closed) 5.67 ft. 

  • Height (open): 10-1/4 feet

  • Width: 7 ft. 

  • Dry Weight: 2,700 lbs

  • Payload Capacity: 653 lbs.

  • Hitch Weight: 353 lbs.

Holding Tanks/Propane Tanks:

  • Number Of Fresh Water Holding Tanks: 1

  • Total Fresh Water Tank Capacity: 26.0 gal.

  • Number Of Gray Water Holding Tanks: 0

  • Total Gray Water Tank Capacity: 0.0 gal.

  • Number Of Black Water Holding Tanks: 1 (cartridge type)

  • Total Black Water Tank Capacity: 5

  • Propane Tanks: 2

  • Total Propane Tank Capacity: 9.4 gal.

  • Total Propane Tank Capacity: 40 lbs.


  • Body Material: Steel

  • Sidewall Construction: Fiberglass


  • 30 amp AC electrical panel

  • RV rated AC Power Cord 

  • Battery Charger 35 Amps

  • 2 x 12 VDC Deep Cycle Batteries 


  • Second owner.
  • Clear title, paperwork and manual.
  • Unsure of the miles on it, but first owner was in New Mexico.
  • Used only twice.  Selling only since we need to downsize our outdoor toy collection.
  • Very easy to tow and nice low profile - can almost see over the top of it when driving!
  • All in excellent condition.  Probably rate it a 9/10 inside and out.
  • Stored (in open configuration) over the winter dry and out of weather in our outbuilding.
  • Totally winterized plumbing (per the manual instructions) for the winter storage.
NOTE:Bedding and table settings not included.  Only used for photos.


  • Payment - PayPal / Ebay Managed Payments
  • We can accept a cashier's check from reputable bank or cash payment.
  • Sales tax added by Ebay - depending on your state tax laws
  • Located in Sturgeon Bay, WI - zip 54235
  • Local pickup only.
  • We are flexible on pickup dates and will ensure it's ready to go.
  • Buyer can arrange a delivery service (like U-Ship or others) and we will work with arrangements.
  • We have sold a couple 26 foot sailboats and other vehicles on Ebay, so this isn't new to us!
  • Trailer is roadworthy, safe and ready to tow.  
Our Terms:
  • Listing: We have listed this item to the best of our ability. If you have any questions, please contact us and we can provide additional photos, or answers to your questions.
  • Payment: Payment is expected within three days of the ending or mutually agreed on price (or let us know otherwise), PayPal is the preferred method.
  • Shipping: Allow up to 3 business days after payment has been received.  We are often on the road picking up inventory during the week.  Our shipping days are Mondays and Thursdays, although smaller items will often go out sooner (we do have a big mailbox!).  In most cases, we ship with the most economical method (FedEx or USPS), if you desire a faster or express shipment, please let us know so we can accommodate your request.
  • Feedback: Please leave positive feedback for us when the item arrives, we will do the same for you after you have left feedback for us.  We strive to maintain a 100% feedback so if for some reason there is an issue with the item when it arrives, PLEASE contact us ASAP and we'll be happy to work out the issue with you.

Ebay Seller Since 1999