2025 Jayco Seismic 399

2025 Jayco Seismic 399

The Jayco Seismic Toy Hauler is ready to take you and your toys wherever the roads lead. Designed for all-weather camping, the Seismic has undergone zero-degree testing in the Dometic freeze chamber, proving you can camp safely and comfortably all year round, even in snowy conditions. Taking it one step further, the Seismic also undergoes weather chamber testing from zero to 100° F. With Climate Shield™ zero-degree tested weather protection, the Seismic has a fully enclosed and heated underbelly, double-layered fiberglass batt insulation, and double-sided, bubble-foil radiant barrier insulation for best-in-class results.

Features may include:

• 102 in. wide body structural steel l-beam construction

• NPS - Powered by Yamaha 6,000 watt generator with built in pure sign inverter, gas/C.A.R.B certified 6-point hydraulic auto-leveling system

• Battery disconnect switch

• Climate ShieldTM zero-degree tested weather protection:

• PEX plumbing

• 35,000 BTU output furnace

• Double layer fiberglass batt insulation in ceiling and floor

• Double sided radiant barrier insulation (roof and floor)

• Fully enclosed and heated underbelly (ducted) Custom automotive-grade vinyl exterior graphics package Detachable shore power cord

• Digital TV antenna

• Dual 30 lb. propane bottles with auto regulator Exterior marine-grade speakers

• Folding roof ladder

• Fully enclosed, LED-lighted universal docking center:

• Black tank flush, winterization and sanitation

• Quick-connect outside shower

• Satellite prep

• HELIX Cooling SystemTM (industry exclusive):

• Directional and closeable A/C vents

• Jayco-exclusive insulated dual duct design

• Two exterior-mounted 15,000 BTU ducted A/Cs (living room and bedroom)

• JaySMARTTM (Safety Markers And Reverse Travel) LED lighting (patented)

• LED exterior lighting package

• LP quick-connect

• Magnum TrussTM Roof System (strongest tested roof in the industry) with Alpha roof membrane system with limited lifetime warranty Painted fiberglass front cap with clear coat and built-in specialty LED lighting

• Pass-through storage with Slam-latchTM baggage doors

• Stronghold VBLTM aluminum framed and vacuum bond laminated gel coated fiberglass exterior walls and slide room end walls Under-mounted spare tire

• Water heater bypass

• 12V charging station

• 5/8 in. tongue-and-groove joined plywood main floor decking and 3/8 in. tongue-and-groove plywood in the roof Bathroom skylight

• Carbon monoxide and LP detector

• Central command center with built-in tank monitoring

• Custom interior design - Vintage Farmhouse

• Gas-strutted under-bed storage

• Handcrafted and glazed doors, drawers and trim

• Hardwood safety handrail on hallway steps

• Heavy-duty, 75 lb., full-extension, steel ball-bearing drawer guides

• Inverter pre-wire

• LED fireplace with electric space heater (select models)

• LED interior lighting throughout

• No in floor heat registers throughout the coach

• Porcelain foot flush toilet

• Residential "Do it all" sink with pull-out kitchen faucet, glass rinse and vegetable rinse

• Residential finished dove tail jointed drawers throughout

• Residential quilted bedspread

• Residential vinyl flooring (made in the USA)