Lennox GCS10261/311/411/413/461/463/511/513/651/653 — curb adapter & replacement fit
The Lennox GCS10261/311/411/413/461/463/511/513/651/653 mounts on a roof curb with an overall footprint of 75″ × 57″. 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: 75″ × 57″ (L × W)
Covered models: GCS10261/311/411/413/461/463/511/513/651/653(M)
Existing-curb pattern drawing — reference only, verify dimensions before fabrication.
Replacing a Lennox unit? Read the Lennox curb compatibility guide →
Compatible replacement pairings
- Lennox GCS10261/311/411/413/461/463/511/513/651/653 76″ × 52″
- Lennox LCB036/60H 77″ × 47.5″
- Lennox SCC036 77.125″ × 47.375″
- Lennox CHA111353 85″ × 59.5″
- Lennox CHA16048/60 69″ × 50.5″
- Lennox CHA8411/413/461/463 65.5″ × 60″
- Rheem/Ruud RRCF***076 75″ × 55.5″
- Carrier 48DD*012 76.5″ × 56.5″
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