| Nominal Size | 24 x 20 in |
| Series | C Series |
| Image | Supplier | Item Code | Short Description |
|---|---|---|---|
| | Royal Building Products | PLA C18-1224-20 | CONCENTRIC INCREASER BUSHING SXG (DR18) C18122420 |
| | Royal Building Products | PLA C18-6024-20 | CONCENTRIC INCREASER COUPLING GXG (DR18) C18602420 |
| | Royal Building Products | PLA C25-1224-20 | CONCENTRIC INCREASER BUSHING SXG (DR25) C25122420 |
| | Royal Building Products | PLA C25-6024-20 | CONCENTRIC INCREASER COUPLING GXG (DR25) C25602420 |
