Wide Application: Perfect to improve heat transfer of the system and lower the needed water supply temperature. Power-saving product to use at home, apartment, hotel etc. Thickness & Notice: 0.016" standard thickness, can be stapled by hand or stapler. U-shaped design, reduce thermal voids that occur from gaps between plates & tubes. Effortless Install: Typically installed in radiant system of under-floor (between joist) type, sandwich type, above sub-floor(sleeper), wall & ceiling. Leave 1-2" spacing between plates when assembling. Cuttable design to meet different needs. Great Compatibility: These radiant heat transfer plates are compatible with most type of 1/2" PEX tubing(5/8" OD). Suit for most brands' PEX, PEX-AL-PEX or EVOH coated 'Oxygen Barrier' pipes. Premium Plates Kit: Amount: 100pcs; Material: Aluminum; Length: 4FT; Width: 4.25"; Good quality product to provide better heat transfer function for radiant floor system.