Super Sprouter 50 Cell Square Plug Insert | Fits a 10 x 20 Flat

What Fits a 50 Cell Plug Tray, Cell by Cell The insert measures 19.7 in long, 9.6 in wide and 1.6 in deep, and those are the numbers that matter here. Fifty cells across that footprint sit in a ten by five grid. Divide it through and each cell is a shade under two inches square, with the 1.6 in depth as the rooting volume. That puts it in useful company. A Grodan A-OK stonewool plug at one and a half inches drops straight in with room around it. A coco plug of the same size does too, and so does a compressed cube. Loose medium works as well, whether that is a potting mix or a soilless blend. The insert is not a tray in its own right. It has no reservoir, so it sits inside a flat and drains into it. It fits all standard flats. One insert weighs a fifth of a pound, and the trade case runs seventy of them at a little under twenty pounds. Choosing a 50 Cell Seed Tray Over a 72 Cell One Fifty cells or seventy two in the same footprint is a real decision rather than a preference. Super Sprouter make both of them. More cells means more starts per flat and less medium in each one. Fewer cells means a bigger root ball before anything has to be moved on. For seed that germinates fast and goes out early, the denser tray wins on count alone. Cuttings are a different proposition entirely. They sit under a dome for two or three weeks and build real root mass, so the larger cell is what avoids a root-bound plug. This insert sits on the larger-cell side of that choice. There is a second reason to prefer fewer cells and it is about water rather than roots. A small cell dries out faster. A tray of fifty holds its moisture more evenly than a tray of seventy two under the same light. That matters most in the first week, when one dry corner costs you a whole row of starts. Put a no-holes flat underneath and a vented dome over the top and the propagation stack is finished. Key Features Fifty square cells: In a ten by five grid across the standard insert footprint. Close to two inches a cell: Across a 19.7 by 9.6 in insert. 1.6 in deep: Which is the rooting volume each cell actually gives a start. Plugs or loose medium: Coco plugs, stonewool plugs, potting mix or a soilless blend. Needs a flat under it: The insert has no reservoir and drains into the tray below. Fits all standard flats: Which is the ten by twenty footprint the whole trade uses. A fifth of a pound: Light enough that a stack of them costs nothing to store. Seventy to a trade case: A little under twenty pounds for the full case of inserts. Technical Specifications Specification Value SKU 726227 Manufacturer part HGC726227 Brand Super Sprouter Product 50 cell square plug insert, for a standard flat Cells 50 square cells, in a 10 by 5 grid Cell size About 2 in square Depth 1.6 in Dimensions 19.7 x 9.6 x 1.6 in Fits Any standard 10 x 20 in flat Takes Coco plugs, stonewool plugs, soil and soilless mixes Drainage Drains into the flat beneath it Weight 0.2 lb each Case pack 70 inserts, 19.9 lbs UPC 849969033427 single, 10849969033424 case