| Product Description | Thermal Barrier | System Depth | Series Number |
| Heavy Commercial Single Hung | Optional F & D | 4.000" | C3550 |
| Heavy Commercial Double Hung | Optional F & D | 4.000" | C3500 |
| Commercial Single Hung (tilt) | Optional F & D | 3.750" | C4050 |
| Commercial Double Hung (tilt) | Optional F & D | 3.750" | C4000 |
| Commercial Single Hung | N/A | 3.000" | C400 |
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