RooTrimmer 1020 Seed Starter Trays 20-Pack — Shallow 21 x 11 in, 1.6 in Deep Heavy-Duty No-Hole

RooTrimmer TD538 20-pack shallow 1020 trays are heavy-duty, reusable seedling flats without drainage holes designed to hold 72/128 cell plug trays, microgreens, hydroponic setups and small nursery pots.

These shallow growing trays are built to pair exactly with RooTrimmer 72- and 128-cell plug inserts, keeping cells stable during germination, transplanting and propagation. Constructed from thicker PS plastic, the TD538 trays resist bending, cracking and warping so you can move trays full of soil or water with one hand. The no-hole design prevents drips on shelves and makes these flats ideal as drip catchers, microgreen beds or hydroponic bases.

How do these trays fit my 72/128 cell plug trays?

The TD538 top measures 21"×11" and the bottom footprint is 19.1"×9", sized to nest snugly with RooTrimmer plug inserts so trays won’t shift when carried. The 1.6" depth matches most shallow plug trays and is intended to support cell trays up to about 1.8" high.

• Precision dimensions to hold 72 and 128 cell plug trays securely
• Shallow 1.6" profile designed for standard seedling depth
• Reduced lateral movement during transport or handling

What makes these trays more durable than typical seed flats?

RooTrimmer uses thicker PS material to improve rigidity and longevity compared with thin, disposable flats. The heavier construction resists bending when filled with potting mix and can survive higher temperatures without cracking.

• Reinforced walls and base to prevent flexing under weight
• Heat-resistant PS plastic that won’t crack at normal nursery temperatures
• Reusable design supports multiple growing cycles, reducing waste

Why choose no-drainage-hole trays — what are the uses?

No-drainage trays avoid leaks on benches or shelving and double as drip trays, hydroponic reservoirs, or microgreen beds. They are especially useful when you want to retain moisture, control runoff, or contain coco coir and other soilless media.

• Use as drip catchers beneath potted plants or tray stacks
• Ideal for microgreen and wheatgrass cultivation directly inside the flat
• Works as a hydroponic base for shallow water culture systems

How many trays are included and what capacity should I expect?

This product is sold as a 20-pack of TD538 shallow 1020 flats, giving growers a large, consistent set for propagation or commercial staging. The pack supports batch seeding, staging multiple varieties, or rotating crops through successive germination cycles.

• 20 identical trays for uniform growing and easy stacking
• Space-efficient footprint fits standard greenhouse benches and shelving
• Convenient for hobbyists, small growers and professional propagation rooms

Who is this for: The RooTrimmer TD538 20-pack is aimed at gardeners, nurseries, urban farmers and hobby growers who need sturdy, reusable seed flats that pair precisely with 72/128 cell plug trays. It’s a practical choice when you want leak-free trays for microgreens, hydroponics or transplant staging and expect repeated use without warping or cracking.