Altuna2376005-serie Premium Tray w/Holes Turnover 38 cm.

Don't know why this is called Altuna series - it's a 38 cm extra deep, premium Stewart gravel tray (black, without holes). It fits the 38 cm Stewart propagator lid (non-electric Premium rigid ones - probably also fits the essentials vacuum formed but don't have those, so can't confirm), but it's not exactly the same as the base you get with a non-electric 38 cm Stewart propagator with premium lid. Which is weird, as you'd think the "premium" base would go with the "premium" lid... You can buy the lids separately, if you want to use this as a propagator base, otherwise, it's a gravel tray or seed tray without holes. Compared to the standard Stewart 38 cm gravel tray/propagator base, the top rim is same size, obviously, but it's deeper and I think the inside base is somewhat smaller, as the sides angle inwards slightly more (don't want to empty others to compare). The bottom is also shaped differently and seems somewhat stronger. Outside diameter at top - outside rim to rim - is 38 x 23.5 cm. It's 8.5 cm deep (measured on outside, compared to 6.5 cm on normal gravel tray). Inside space on bottom is 32 x 18 cm, not including the little rim on the bottom around the edges, with the rim, it's 33 x 19 cm inside on bottom. I like the extra depth, as I use clay pebbles on the bottom of the trays, which raises the plant containers up and it provides extra stability. With postage, it's quite expensive, compared to say sets of 3 or more seed trays without holes/gravel trays, but is about the deepest of this size I've found so far, so would recommend if you want the extra depth or stability.

Very good quality (so gets the 5 stars) but I got green trays with holes and not black without - as per product description

Just what I needed