2026 Jayco Seismic 399

New Toy Hauler in Cross City, Florida, 32628

$108,995.00

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New 2026 Jayco Seismic 399 available in Cross City, Florida

2026 Jayco Seismic 399 - New Toy Hauler For Sale by Couch Family RV in Cross City, Florida features Inverter, Dryer, Heated Underbelly, Black Tank Flush, Slideout

2026 Seismic 399 by Jayco from Couch Family RV in Cross City, Florida

Unit Specs

Blow Out Price
In Stock
Special

Stock #10654
Year2026
ManufacturerJayco
Make Jayco
ModelSeismic
Floorplan399
Floorplan LayoutFront Bedroom
Mid Kitchen
Mid Living Area
Type Toy Hauler
ConditionNew
Length45' 8"
Width8' 6"
Height13' 3"
VIN1UJCGSCV8T18M0148
MSRP $146,668.00
Price $110,995.00
Sale Price $108,995.00
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Sleeps8
Water Capacity (Fresh)106 gal
Water Capacity (Black)87 gal
Water Capacity (Grey)87 gal
Air Conditioners3
A/C Spec13,500 BTU soft-start, high-efficiency, ducted A/C
Refrigerator Capacity17 ft³
Slideouts3
Payload Capacity5450 lbs
Dry Weight14,950 lbs
# Axles3

Looking to buy a 2026 Jayco Seismic Toy Hauler RV?

Everything you need for the perfect RV trip is packed into this 2026 Jayco Seismic 399. Ready to be a proud Jayco owner? This 2026 Jayco Seismic 399 is the perfect fit. If you’re looking for a family RV, you’ve found it: this rig sleeps 8. There’s plenty of room for the whole family thanks to three spacious slides. The fridge, oven make the perfect combo for eating well on the road. The TV make it easy to spend time together as a family. Sweet dreams are made of the queen bed in this RV bedroom. If you like your rig cool in the summer and warm in winter, this heating option can do the trick. Go longer without filling up thanks to the 106 gallon fresh water tanks. While the inside of this rig is enough on its own, the outside also features awning, black tank flush, detachable, heated underbelly, ladder, power roof vent, ramp, rear ramp door, roof deck, roof vent, skylight and slideout.

2026 Jayco Seismic 399 Features

Appliances
Dryer, Furnace, Microwave, Oven, Refrigerator, Washer, Water Heater
Electrical
Generator, Inverter, Solar Panel, Solar Panels
Equipment
LED HDTV, LED Lights, LP Detector, Propane, TV, TV Antenna
Exterior
Awning, Black Tank Flush, Detachable, Heated Underbelly, Ladder, Power Roof Vent, Ramp, Rear Ramp Door, Roof Deck, Roof Vent, Skylight, Slideout
Interior/Furnishings
Fireplace, Queen Bed, Shower, Toilet, Washer/Dryer Prep
Horse / Livestock / LQ / Tack
Insulated

2026 Jayco Seismic 399 Specifications

General

MSRP

$126,668

Dimensions

Height

13' 3"

Height (interior)

8' 3"

Length

45' 8"

Width

8' 6"

Weights

Dry Weight

14,950 lbs

GVWR

20,400 lbs

Payload Capacity

5,450 lbs

Capacities

Refrigerator Capacity

17 cu ft

Sleep Capacity

Water Capacity - Black

87 gal

Water Capacity - Fresh

106 gal

Water Capacity - Grey

87 gal

Exterior

# Awnings

# Axles

# Doors

# Slides

Hitch

Fifth Wheel

Electrical

# A/C

A/C Spec

13,500 BTU soft-start, high-efficiency, ducted A/C

*MFG Specs are for base unit. Certain options may change specifications listed. Please consult dealer for more details. Data is provided by a 3rd party. RVUSA.com cannot guarantee the accuracy of the data presented.