Buy from Amazon : http://www.amazon.com/gp/product/B00275ENTU?tag=scratchandsti-20 <br /> <br />Exaco - RIGA Shelf Planter Box - Heavy Duty Black Seed Tray <br /> <br />Seed trays easily fit in the polycarbonate shelving <br />Seed trays make starting seeds and transplanting easier <br />Trays measure 24 long x 16 wide x 2 high <br />Spare parts are specific only to the RIGA greenhouse line These are not designed to work with other brands of greenhouses
