| CP# | Description | Length | Width | Height | Molds |
| 5389 | D-Shaped Muffle | 4 | 7 1/4 | 8 1/4 | 1 |
| 5493 | D-Shaped Muffle Collar | 4 | 9 1/4 | 9 | 1 |
| 5193 | D-Shaped Muffle | 16 | 13 1/2 | 8 3/4 | 1 |
| 5474 | D-Shaped Muffle | 18 | 8 7/8 | 7 | see 2192 |
| 3693 | D-Shaped Muffle | 18 | 13 1/2 | 8 3/4 | 1 |
| 5291 | D-Shaped Muffle | 18 13/16 | 9 3/4 | 5 1/8 | 1 |
| 3621 | D-Shaped Muffle | 18 | 16 | 18 1/2 | |
| 5346 | D-Shaped Muffle | 23 5/8 | 9 3/4 | 3 7/8 | 1 |
| 5840 | Muffle - Closed End | 22 1/4 | 11 | 8 | 1 |
| 6067 | D-Shaped Muffle w/ 5/16" hole | 24 | 11 | 4 3/8 | |
| 5232 | D-Shaped Muffle | 24 1/8 | 10 7/8 | 4 3/8 | 1 |
| 6074 | D-Shaped Muffle w/ 5/16" hole | 28 | 14 1/2 | 9 1/2 | |
| 6073 | D-Shaped Muffle 2/ 5/16" hole | 36 | 6 1/2 | 5 3/8 | |
| 2192 | D-Shaped Muffle | 36 | 8 7/8 | 7 | 1 |
| 2954 | D-Shaped Muffle | 36 | 7 | 7 1/4 | 1 |
| 6068 | D-Shaped Muffle w/ 5/16" hole | 36 | 9 | 7 | |
| 5344 | D-Shaped Muffle | 36 | 9 3/4 | 5 7/8 | 1 |
| 3009 | D-Shaped Muffle | 36 | 11 1/2 | 8 7/32 | 1 |
| 4194 | D-Shaped Muffle | 36 | 11 | 7 31/32 | 1 |
| 4704 | D-Shaped Muffle | 36 | 6 1/4 | 5 1/4 | 1 |
| 4942 | D-Shaped Muffle | 36 | 7 | 7 | 1 |
| 5195 | D-Shaped Muffle | 36 | 6 1/2 | 5 3/8 | 1 |
| 4116 | D-Shaped Muffle | 43 5/16 | 8 7/8 | 7 3/8 | 1 |
| 3267 | D-Shaped Muffle | 48 | 8 1/8 | 7 13/16 | 1 |
| 4219 | D-Shaped Muffle | 48 | 4 7/8 | 4 7/8 | 1 |
| 4621 | D-Shaped Muffle | 48 | 8 1/8 | 7 13/16 | 1 |
| 4691 | D-Shaped Muffle W/3/4" Hole | 48 | 8 1/8 | 7 13/16 | 1 |
| 5250 | D-Shaped Muffle | 48 | 7 | 7 | 1 |
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