Very slight warp but it flattens when under a brew bucket.
Electrim TE25 Heated Pad/Tray - Heater For 25 Litre Beer & Wine Making Homebrew
25W Brewing Heat Pad Home Brew Heating Pad for Beer Wine Spirits Fermenter 30 cm
Heat Pad for Fermentation Vessel / Demi-John or Bucket - Mangrove Jacks
Flexible Heat Pad For Heating - Better Brew Vodka Wine Beer Cider Making FreeP&P
Home Brew Heat Heating Belt Pad for Beer Wine Spirits Fermenter+ Sticker on Ther
Home Brew Heat Heating Belt Pad for Beer Wine Spirits fermenter +Thermometer
