2007 Keystone Montana Mountaineer 342PHT

The 342PHT model of the Keystone Mountaineer line is a spacious, family-oriented fifth-wheel designed to deliver full-time comfort and versatility. With roughly a 36′ 3″ length and three slide-outs to expand living space, the 342PHT offers a generous layout that includes a front master bedroom, a full living-room/kitchen slide, and a rear bunkhouse — making it ideal for large families or groups.

Up front, the master suite fits a queen bed and offers wardrobe and storage space. The central living area features a booth dinette, a hide-a-bed sofa (or jackknife sofa), and an entertainment center. The kitchen includes a three-burner range with oven, a double kitchen sink, refrigerator, pantry storage, and ample cabinetry — convenient for meal prep and long stays. 

Toward the rear is a dedicated bunkhouse with fold-down bunk beds and a sofa (or jackknife sofa), offering extra sleeping space — useful for kids or guests. The bathroom is a side-aisle bath with a garden tub/shower, vanity, and medicine cabinet, giving useful convenience and privacy.

Construction-wise, the 342PHT is built on a sturdy aluminum-framed structure with laminated fiberglass exterior walls, a fully enclosed and insulated underbelly, and residential-style interior finishes — solid hardwood cabinetry, overhead storage, and more — giving it a “home-away-from-home” feel. Overall, the 342PHT balances comfort, space, and practicality, making it a strong choice for families or full-time RV living.