Captive Aire CASRTU2 — curb adapter & replacement fit

The Captive Aire CASRTU2 mounts on a roof curb with an overall footprint of 120.25″ × 49.5″. SMARTCurb can compile a fabrication-ready curb adapter between this unit and hundreds of other rooftop units — replacement without touching the roof deck.
Curb footprint: 120.25″ × 49.5″ (L × W)
Covered models: CASRTU2
Existing-curb pattern drawing — reference only, verify dimensions before fabrication.
Compatible replacement pairings
- Captive Aire CAS-HVAC2-18Z 121.25″ × 50.5″
- Captive Aire CASRTU1 111″ × 41″
- Captive Aire CASRTU3 141.5″ × 59″
- Captive Aire CAS-HVAC3-20MF 143″ × 60.5″
- Captive Aire CASRTU3 91″ × 59.5″
- Captive Aire EARTU3 91″ × 59.5″
- Aaon RH 26-60 120″ × 45″
- AbsolutAire AA4 116″ × 51″
Need this fabricated?
Taylor Metals builds SMARTCurb adapters in 16 ga galvanized steel, fully welded, ready to set. Vancouver / Pitt Meadows, BC.
Request a quote — most quotes within 24 hours