Hillman 1/4 In. x 3-1/2 In. Grade 2 Zinc Hex Bolts (100 Ct.) O-Cedar The unit has 2-speed rotary

The unit has 2-speed rotary dials and will cool a room up to 150 square feet

Apply by pouring into your pond at several places

and fasten

R1 R2 square recess

Hillman 1/4 In. x 3-1/2 In. Grade 2 Zinc Hex Bolts (100 Ct.) O-Cedar The unit has 2-speed rotaryHex bolts are machine bolts that have been designed to adhere facing materials to prevent shear movement. Specifically in wood to wood, wood to metal, or metal to metal applications. Zinc grade 2 hex bolts are recommended for most general uses and are corrosion resistant for typical use. Be sure to pre drill any holes and to use washers and nuts that are a similar grade and finish.