2" Round 3 Hour Vertical Fire Door 2565-6 Specialty Products Standard Features * 1/2" x

Standard Features * 1/2" x 1/2" x 1/2" aluminum lattice return air grille * Surface mount grille with

1-27/32” x 11/32” slots

" Spiral pipe diameter must be 4” larger than width of grille

available with one

Standard Features * Extruded

2" Round 3 Hour Vertical Fire Door 2565-6 Specialty Products Standard Features * 1/2" xh3. Standard Features * 2561 Square or rectangular fire door for vertical mount only. Maximum dimension 48w, 49h. For damper free area chart A click here * 2563 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 48w, 41h. For damper free area chart B click here * 2565 Round fire door for vertical mount only. Available 4" thru 40" round. * UL and California State Fire Marshall approved * 2" thinline frame *