Medium Pre-Cut Monotub Liners - Fits Medium 44Q Monotub & More
Medium Pre-Cut Monotub Liners - Fits Medium 44Q Monotub & More - 3-Pack is backordered and will ship as soon as it is back in stock.
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Description
Description
The 44Q is the workhorse tub, and this is the liner cut for it — 18" × 15.5", factory folded and UV-C sterilized. Unfold, press into the base, fold over the rim. No measuring, no trimming, no trash-bag corners bunching up where the substrate meets the wall.
- 44Qmonotub
- 18" × 15.5"liner size
- 3 or 10pack options
- UV-Csterilized
- 30–44Qbin range
What a liner actually does for the grow
- Cuts side pinning — blocks light along the tub walls so the flush comes up on top of the substrate instead of down the sides.
- Better edge microclimate — the liner collapses inward with the cake as it shrinks, keeping the wall gap closed rather than opening a dry channel.
- Substrate never touches the tub — no staining, no dried casing baked into the corners.
- Cleanup is a lift — pull the liner with the spent block inside and the tub is ready to reload.
What you get
- 3 or 10 pre-cut liners, factory folded and ready to use
- Sized for Grower's Select and Microppose 44Q monotubs and similar 30–44Q bins
- UV-C sterilized before packaging
How to install
- Unfold the liner and position it in the empty tub.
- Press into the base and corners so it lies flat with no air trapped underneath.
- Fold the excess over the rim — the lid clamps it the rest of the way.
- Spawn as normal — colonized grain and bulk substrate go straight onto the liner.
- Lift it out after harvest with the spent block inside and wipe the tub down.
Match the liner to the tub. Liners are size-specific. Oversized bunches at the corners and traps water; undersized leaves bare wall where side pins push straight through the gap.
Which liner fits your tub
| Liner | Fits | Liner size | Pack options |
|---|---|---|---|
| Small | 28Q cube monotub | 12" × 12" | 4-pack or 10-pack |
| Medium (this listing) | 44Q monotub (30–44Q bins) | 18" × 15.5" | 3-pack or 10-pack |
| Large | 66Q monotub (50–66Q totes) | 24" × 15.5" | 3-pack or 10-pack |
Specifications
| Spec | Detail |
|---|---|
| Designed for | 44 quart monotubs |
| Also fits | Most 30–44 quart bins |
| Approximate liner size | 18" × 15.5" |
| Pack options | 3-pack or 10-pack |
| Sterilization | UV-C treated before packaging |
| Packaging | Factory folded, ready to use |
| SKU | MLN3 (3-pack) / MLN10 (10-pack) |
Frequently asked questions
Will these fit a tub that isn't a Grower's Select or Microppose?
Most 30–44 quart bins work. Measure the inside base of your tub first — if it's closer to a 28Q cube, take the small liner; if it's a 50–66Q tote, take the large.
Do liners really reduce side pinning?
They help, because side pins are largely a light response along the tub wall and the liner blocks that light. They aren't a complete fix on their own — spawn depth and keeping the tub out of direct light matter just as much.
Do I need to sterilize the liner before use?
No. Each liner is UV-C treated before packaging and arrives factory folded. Handle it with clean hands, unfold it into the tub and spawn as normal.
Are they reusable?
Most growers treat them as single-use and pull the liner with the spent block at the end of a run — that's where the cleanup savings come from. They're cheap enough that reusing one isn't worth the contamination risk.
How much spawn and substrate does a 44Q tub take?
One spawn bag of roughly 2.25 to 2.5 lbs of colonized grain to about 7.5 lbs of bulk substrate — close to a 1:3 grain-to-substrate ratio. The liner doesn't change any of that.
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