Installation kit for Venmar HRV 2500 or HRV 2600 (code: 0909088) and Guardian HR 2.5 or Broan HR 2.6. This basement kit includes: four 30-in. clamp collars, four 24-in. clamps, one outside port and one 3.8-in. x 7-in. outside screen, two 6-in. whisper registers, one 5-in. x 20-ft. IFT, one 6-in. x 45-ft. NIFT, one tandem transition and one small installation bag.