How deep are they ? as I've been given some polycarb sheeting and a
planning
to build a propagator.

The Plantpak Mini Plug Trays contains 16x12 cell mini plug trays, held in a
rigid drip tray. The pack costs approx. £2.99. Each of the 16 mini-trays
measure 6.5 x 10.5 cm. Each plug is about 2.5 - 3 cm deep and about 2 cm
wide. The nice thing about these is you can plant up each mini-tray with 12
seeds, and as they come up, can move them out to different conditions, as
opposed to having to move out the whole large tray.

Planted some seeds a few days ago ... and have now got cucumbers, tomatoes,
dianthus, melons etc germinted and growing..... :-)

Best,

- h