Lennox CHA81853/2753 — curb adapter & replacement fit
The Lennox CHA81853/2753 mounts on a roof curb with an overall footprint of 126.5″ × 76.5″. 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: 126.5″ × 76.5″ (L × W)
Covered models: CHA81853/2753, GCS31853/2753, OCS31853/2753
Existing-curb pattern drawing — reference only, verify dimensions before fabrication.
Replacing a Lennox unit? Read the Lennox curb compatibility guide →
Compatible replacement pairings
- Lennox CHA81853/2753 126.5″ × 77″
- Lennox CHA112753 134″ × 69.5″
- Lennox LCC248H/300H/360H 115″ × 85.5″
- Lennox SCA240H 114.5″ × 85.5″
- Lennox SCC240 115.125″ × 86.125″
- Lennox CHA81353 124″ × 57″
- Valent VR-400 124.88″ × 78.75″
- Greenheck RT-120 124.9″ × 78.8″
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