Are these trays flimsy?

I've been using my Mr Penn tray for about 2 months they are sturdy.

What kind of plastic are these made of?

The trays are made of sturdy plastic. They are not flimsy and hold their shape well. Have not had any problems with handling the weight of the 2" or 3" seed starter pots.

Anyone use them with a heat mat?

I am using them with a heat mat currently with no issues

Does the tray have no drainage holes? Conflicting answers - some person say NO HOLES; another says ONE HOLE.

The trays I have do not have any holes. They just have the raised areas that run the length of the tray. So when you put your pots in the tray and water them the water that comes out the bottom will settle below the bottom of your potted plants.

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🌿 Grow smarter, not harder — your green thumb’s new best friend!

BUILT TO LAST - Heavy-duty plastic ensures your trays survive season after season—no waste, just growth.
ALL IN ONE 5 PACK - Get more growing power with five sturdy trays in one sleek black set.
EASY CLEAN ORGANIZED - Raised edges keep your workspace tidy and cleanup a breeze—ideal for beginners and experts alike.
VERSATILE COMPATIBILITY - Fits all heat mats, humidity domes, and hydroponic setups for pro-level gardening.
PERFECT GROWTH ENVIRONMENT - Designed to lock in soil, water, and nutrients for effortless plant management.

Mr. Pen’s 5-pack black plastic seed trays offer a durable, reusable solution for indoor and outdoor gardening. Sized at 17×10×2.4 inches, these lightweight trays retain soil, water, and nutrients efficiently, supporting seed germination, microgreens, and diverse plant cultivation. Compatible with heat mats, humidity domes, and hydroponic systems, they combine professional-grade versatility with easy cleaning and organized planting, perfect for both novice and experienced gardeners.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Manufacturer	Mr. Pen
Package Dimensions	43.1 x 25.7 x 7.9 cm
Material	プラスチック
Color	ブラック
Special Features	耐久性
Package Weight	0.55 Kilograms
Batteries Required	No
Batteries Included	No
Brand Name	Mr. Pen
Item Weight	454 g

Mr. Pen プラスチック栽培トレイ 5パックブラックシードトレイ繁殖トレイ苗用植物トレイ植栽トレイマイクログリーントレイ苗スタータートレイ

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Mr. Pen プラスチック栽培トレイ 5パック ブラック シードトレイ 繁殖トレイ 苗用植物トレイ 植栽トレイ マイクログリーントレイ 苗スタータートレイ

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Specifications

Have a Question? See What Others Asked

Common Questions

Mr. Pen プラスチック栽培トレイ 5パックブラックシードトレイ繁殖トレイ苗用植物トレイ植栽トレイマイクログリーントレイ苗スタータートレイ