| Best for | Straw Pellets, Hardwood Pellets, Sawdust, Masters Mix, Soya Hulls & Wheat Bran | Straw Pellets, Hardwood Pellets, Sawdust, Masters Mix, Soya Hulls & Wheat Bran | Straw Pellets, Hardwood Pellets, Sawdust, Masters Mix, Soya Hulls & Wheat Bran | Straw Pellets, Hardwood Pellets, Sawdust, Masters Mix, Soya Hulls & Wheat Bran | High gas exchange requirements | High gas exchange requirements | Rye, wheat, millet & popcorn grains | Rye, wheat, millet & popcorn grains | Rye, wheat, millet & popcorn grains | Rye, wheat, millet & popcorn grains |
| Size | 4" × 3" × 18"10 × 8 × 46 cm | 5" × 4" × 18"13 × 10 × 46 cm | 8" × 5" × 19"20 × 13 × 48 cm | 10" × 5" × 24"25 × 13 × 61 cm | 8" × 5" × 19"20 × 13 × 48 cm | 10" × 5" × 24"25 × 13 × 61 cm | 4" × 3" × 18"10 × 8 × 46 cm | 5" × 4" × 18"13 × 10 × 46 cm | 8" × 5" × 19"20 × 13 × 48 cm | 10" × 5" × 24"25 × 13 × 61 cm |