12 STC (2023) THIS CAMPER MODEL IS ON HOLD AND CANNOT BE ORDERED AT THE PRESENT TIME. However, Optimum RV in Muskegon MI have a new 2023 12STC available.




However, Optimum RV in Muskegon MI. have a new 2023 12STC available, the only one in the USA.

Please contact them for further details. 231 767 9000.

For all of our Northstar customers looking for a larger camper, please consider the 12 STC "Stay The Course.” 

At 12’ in the floor length the side door entry12 STC is the longest camper that the RC Willett Company has ever built. 

It has a width of 7' 9" and a dry weight standard build of 3176 lbs. Even when optioned with 1 AGM battery (Room for 2), a 13' crank out side awning and a roof AC the dry weight is only 3419 lbs.

Please keep scrolling down to click on:

SPECS (dimensions & capacities)

FEATURES (std. equipment)

ACCESSORIES (options/accessories) 



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Base Dry Weight 3,176 lbs
Floor Length / Overall length 12' / 19' 5"
Floor Bottom Width (Exterior) 4'
Exterior Width 7'9"
Entrance Door Width 26"
Interior Height 6' 9"
Approximate Center of Gravity 54"
Cabover Bed Size 60" x 80"
Dinette Bed Size 38" x 78"
Fresh Water Capacity 41 Gal
Gray Water Holding Tank 15 Gal
Cassette Fresh Water Tank 4.5 Gal
Cassette Black Water Tank 5 Gal

12 STC (2023) THIS CAMPER MODEL IS ON HOLD AND CANNOT BE ORDERED AT THE PRESENT TIME. However, Optimum RV in Muskegon MI have a new 2023 12STC available. Features

  • Dometic 8 cubic foot double door refrigerator
  • 3 burner stove with oven, built in microwave (Stainless steel)
  • Double sink with single lever faucet and pull out sprayer
  • 41 gallon fresh water tank
  • Dry shower/Cassette toilet/Lavatory sink/cabinet
  • Auto ignition water heater
  • Heated gray and black tanks
  • Winterization bypass kit
  • North/South extended cabover with overhead cabinets, side hampers
  • Heki Insulated exit vent with built in screen and shade
  • Auto ign. furnace ducted to bathroom
  • Marine grade Radiata plywood
  • Upgraded insulation package
  • Insulated windows with built in screens and shades.
  • Maxxfan Plus Model 00-05100K
  • Aviation push button latches on interior doors
  • Lagun table system
  • Upgraded seating cushions
  • AM/FM Stereo with 4 speakers
  • 45 amp ATS power converter with charger
  • LED lighting throughout: interior, exterior, clearance, back up and patio
  • Wired for AGM battery/batteries
  • Inside patio light "on" switch
  • 110 and 12 v outlets in cabover/additional over dinette
  • Battery shut off switch
  • Exterior spray port shower with 15' coil hose
  • Side entrance electric 3 step
  • Lamilux 1000 fiberglass siding with graphics
  • 7 way Truck plug and holder
  • 30 amp Twist lock adapter w/15 amp lighted power cord
  • 2 x 20 lb stand up exchangeable LP tanks
  • Screened entry door with deadbolt, large assist handle and gas strut
  • Walk on TPO roof
  • Plastic protection down front and sides/rubber bumpers loose
  • Digital TV antenna
  • Pre-wired for roof AC/Solar
  • Electric jacks with remote control
  • Accent lights under outs
  • Lined and insulated generator storage compartment
  • Wireless back up digital camera with 5 " screen
  • Exterior USB charging port
  • Fresh water tank cleaning access
  • 1000 Watt Inverter w/2 110v outlets

Accessories by Number

3.   Gas/electric water heater (Above std.) $365.00
14.   Roof air conditioner (89 lbs) $1,270.00
17.   22" 12v Digital TV with locking arm (20 lbs) $565.00
23.   Fold down bunk/cabinet with 2 doors and restraint net (Over dinette) (38 lbs) $435.00
24.   Insulated window in the overhead bunk. $465.00
25.   Insulated bathroom window in the camper rear wall. $465.00
30.   Generator storage slide out tray (5 lbs) $260.00
33.   Exterior solar Hook Up $95.00
34. Cabover Maxxfan Plus Model 00-05100K in place of std. Heiki vent $0.00

Accessories by Letter

C.   13' Carefree crank out side awning (65 lbs) $1,945.00
D.   6' 6" Fiamma Eagle self supporting rear awning (33 lbs) $1,045.00
E.   8' Carefree crank out side awning (49 lbs) $1,685.00
F.   10' Carefree crank out side awning (55 lbs) $1,720.00
G.   Dually swing out brackets with 5" extensions (22 lbs) $380.00
H.   Foam window boot (5 lbs) $130.00
I.   Flip up foot rest (5 lbs) $190.00
J.   Clear entry door window with snap cover (5 lbs) $130.00
K.   Extra step up cushion (5 lbs) $95.00
P.   60 Watt Solar Panel with 30 amp controller (20 lbs) $710.00
Q.   170 Watt Solar Panel with 30 amp controller (30 lbs) $1,155.00

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