Can this fill be put on the outdide of the toilet?

I assume that you could, but since the condensation forms on the outside of the tank I think it wouldn’t stick for long, it would also look super unattractive. It’s a relatively simple install inside the tank, and it works wonders ! I have underground spring fed water that is super frigid and there were puddles of condensation on my floor constantly. This ( installed inside of tank) has stopped it completely!

I wonder, does this affect the flushing ability for 1.28 gallon toilets?

No. It’s not thick enough to displace enough water to affect flushing capability.

Should this be applied on the bottom of the tank also?

I applied it to every surface I could reach. You'll also want to be sure the tank is VERY dry...I set a floor fan up to dry out the tank. You will also want to buy some "industrial" double-sided tape (VHB: Very High Bond). The adhesive on the foam isn't that good.

How long does the tank have to dry before applying liner

We just emptied the tank and dried with a towel and applied.

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Plumb Pak K836-22 Toilet Accessory Liner Tank Insert, White

Plumb Pak K836-22 Toilet Accessory Liner Tank Insert, White

Product ID: 771828037

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💧Prevents water damage & keeps floors dry

📏Compact 16" x 48" size fits most tanks

🛠️Self-adhesive backing for effortless install

Description

🚽 Protect your throne with ease—because your bathroom deserves the best!

PERFECT FIT DIMENSIONS - At 16" x 48", it fits seamlessly inside most toilet tanks for discreet protection.
EFFORTLESS INSTALLATION - Self-adhesive backing means no tools, no hassle—stick it and forget it.
DURABLE CLOSED CELL FOAM - High-quality foam resists moisture and lasts longer than ordinary liners.
ULTIMATE FLOOR PROTECTION - Keeps your bathroom floors dry and damage-free, saving costly repairs.
IDEAL FOR WELL WATER HOMES - Specially designed to handle well water conditions without wear.

The Plumb Pak K836-22 Toilet Accessory Liner is a white, closed cell foam insert measuring 16" x 48" designed to fit inside toilet tanks. Featuring a self-adhesive backing, it installs easily to prevent water damage and keep floors dry, making it especially suitable for homes with well water. Lightweight and durable, it offers reliable protection and peace of mind for your bathroom.

Specifications

Brand	Plumb Pak
Model Number	K836-22
Product Dimensions	6.6 x 11.43 x 50.8 cm; 132 g
Color	white
Material	Foam
Included Components	トイレタンクライナー
Are Batteries Included	No
Item Weight	132 g

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