Client Profiles, Gallery, Installation, RV Adjustables AXEL BLOOM ADJUSTABLE BED: TIFFIN PHAETON CUMMINS DIESEL PUSHER. axelbloombedsonDecember 15, 2018/Comments closed Two Half King Doppelflex MX 2 Adjustable Suspensions. Each Custom Adjustable 28 X 79 inch. Two Half-King Medium-Firm, DW 800 mattresses. Each custom mattress 30 X 79.5 inches. Tiffin Phaeton One Half Adjustable Section installed Two Half adjustable sections installed One adjustable side raised. Note that the top right side is notched in to extend head section. Both adjustable sections raised in the head, back and knees/thigh regions. With both mattresses flat in place First time enjoying the adjustable sections!