Grower Select Plug Trays can be used for seed germination and plant propagation. These plant germination trays feature a glossy finish for easy dislodging of your plugs for transplanting. Square cells have precisely centered punched drain holes. A must have for seed starting. Grower Select Plug Tray Features: Square cell shape Centered drain holes Glossy finish for easy plug removal 105 Cell Dimensions: 1.23 in. W Top x 0.8 in. W Base x 1.89 in. H 512 Cell Dimensions: 0.61 in. W Top x 0.37 in. W Base x 1.02 in. H Standard tray size of 21.25 in. L x 11 in. W NOTICE: These do not fit standard 1020 trays. The 50, 72, 105, 128, and 288-cell square plug trays are compatible with our germination tray. Avoid excessive heat. Do not store outside, especially in direct sunlight. Extreme temperatures may cause empty containers to deform. Specifications Cell Dimensions Overall Tray Weight Cell Volume 50 square cell 1.97" Top Diam x 1.19" Base Diam x 1.81" H 135g 73cc 72 square cell 1.42" Top Diam x 0.875" Base Diam x 1.97" H 135g 34cc 105 square cell 1.23 in. W Top x 0.8 in. W Base x 1.89 in. H 135g 30cc 128 square cell 1.11" Top Diam x 0.67" Base Diam x 1.625" H 165g 17.5cc 288 square cell 0.73" Top Diam x 0.43" Base Diam x 1.32" H 165g 7.4cc 512 square cell 0.61 in. W Top x 0.37 in. W Base x 1.02 in. H 165g 3.4cc