National Chimney has finally done it! The most stock sizes of stainless steel
multi-flue caps in the industry! Designed by a 20 year veteran in the
chimney industry, this cap was made from feedback from you, for you.
| Screen Size | Base Size | Lid Size |
| 9"x9" | 12x12 | 15x15 |
| 9"x13" | 12x16 | 15x19 |
| 9"x17" | 12x20 | 15x23 |
| 9"x21" | 12x24 | 15x27 |
| 9"x25" | 12x28 | 15x31 |
| 13"x13" | 16x16 | 19x19 |
| 13"x17" | 16x20 | 19x26 |
| 13"x21" | 16x24 | 19x27 |
| 13"x25" | 16x28 | 19x31 |
| 13"x29" | 16x32 | 19x35 |
| 13"x33" | 16x36 | 19x39 |
| 13"x37" | 16x40 | 19x43 |
| 13"x41" | 16x44 | 19x47 |
| 13"x45" | 16x48 | 19x51 |
| 13"x49" | 16x52 | 19x54 |
| 13"x53" | 16x56 | 19x59 |
| 13"x57" | 16x60 | 19x63 |
| 13"x61" | 16x64 | 19x67 |
| 13"x65" | 16x68 | 19x71 |
| 13"x69" | 16x72 | 19x75 |
| Screen Size | Base Size | Lid Size |
| 17"x17" | 20x20 | 23x23 |
| 17"x21" | 20x24 | 23x27 |
| 17"x25" | 20x28 | 23x31 |
| 17"x29" | 20x32 | 23x35 |
| 17"x33" | 20x36 | 23x39 |
| 17"x37" | 20x40 | 23x43 |
| 17"x41" | 20x44 | 23x47 |
| 17"x45" | 20x48 | 23x51 |
| 17"x49" | 20x52 | 23x55 |
| 17"x53" | 20x56 | 23x59 |
| 17"x57" | 20x60 | 23x63 |
| 17"x61" | 20x64 | 23x67 |
| 17"x65" | 20x68 | 23x71 |
| 17"x69" | 20x72 | 23x75 |
| Screen Size | Base Size | Lid Size |
| 21"x21" | 24x24 | 27x27 |
| 21"x25" | 24x28 | 27x31 |
| 21"x29" | 24x32 | 27x35 |
| 21"x33" | 24x36 | 27x39 |
| 21"x37" | 24x40 | 27x43 |
| 21"x41" | 24x44 | 27x47 |
| 21"x45" | 24x48 | 27x51 |
| 21"x48" | 24x52 | 27x55 |
| 21"x53" | 24x56 | 27x59 |
| 21"x57" | 24x60 | 27x63 |
| 21"x61" | 24x64 | 27x67 |
| 21"x65" | 24x68 | 27x71 |
| 21"x69" | 24x72 | 27x75 |
| Screen Size | Base Size | Lid Size |
| 25"x25" | 28x28 | 31x31 |
| 25"x29" | 28x32 | 31x35 |
| 25"x33" | 28x36 | 31x39 |
| 25"x37" | 28x40 | 31x43 |
| 25"x41" | 28x44 | 31x47 |
| 25"x45" | 28x48 | 31x51 |
| 25"x49" | 28x52 | 31x55 |
| 25"x53" | 28x56 | 31x59 |
| 25"x57" | 28x60 | 31x63 |
| 25"x61" | 28x64 | 31x67 |
| 25"x65" | 28x68 | 31x71 |
| 25"x69" | 28x72 | 31x75 |
| Screen Size | Base Size | Lid Size |
| 29"x29" | 32x32 | 35x35 |
| 29"x33" | 32x36 | 35x39 |
| 29"x37" | 32x40 | 35x43 |
| 29"x41" | 32x44 | 35x47 |
| 29"x45" | 32x48 | 35x51 |
| 29"x49" | 32x52 | 35x55 |
| 29"x53" | 32x56 | 35x59 |
| 29"x57" | 32x60 | 35x63 |
| 29"x61" | 32x64 | 35x67 |
| 29"x65" | 32x68 | 35x71 |
| 29"x69" | 32x72 | 35x75 |
| Screen Size | Base Size | Lid Size |
| 33"x33" | 36x36 | 39x39 |
| 33"x37" | 36x40 | 39x43 |
| 33"x41" | 36x44 | 39x47 |
| 33"x45" | 36x48 | 39x51 |
| 33"x49" | 36x52 | 39x55 |
| 33"x53" | 36x56 | 39x59 |
| 33"x57" | 36x60 | 39x63 |
| 33"x61" | 36x64 | 39x67 |
| 33"x65" | 35x68 | 39x71 |
| 33"x69" | 35x72 | 39x75 |
