Flush Bolts and Dustproof Strikes

• UL/cUL listed extension flush bolts
• FB358 is for use as top and bottom flush bolts to secure inactive leaf of a pair of swinging fire doors not exceeding 1-1/2 hours fire rating and 10 ft. (254mm) in height
• FB457 and FB458 brass models are for use on all types of labeled metal fire doors not exceeding 3 hours first rating and 10 ft. (254mm) in height

FB30 / FB 40 Series Automatic Flush Bolts

• FB31P for hollow metal doors. Pair contains FB31T top bolt and FB31B bottom bolt. Non-handed. Top and bottom bolts not identical. Top bolt has no spring tension minimizing the actuation force and providing a smooth, easy operation
• FB32 consists of FB31T top bolt and an auxiliary fire latch which replaces the bottom bolt, eliminating floor prep and reducing required door prep. Auxiliary fire latch, mounted in the door edge, releases under extremely high temperatures to keep doors in alignment during a fire
• FB31P and FB32 are UL/cUL listed for pairs of metal fire doors rated up to 3 hours
• FB33 updates existing flush bolt installations with auxiliary fire latch, eliminating bottom bolt and floor strike. FB33 consists of FB31T top bolt, auxiliary fire latch, and filler plate to cover existing cutout when bottom bolt is removed
• FB41P is UL/cUL listed for pairs of wood fire doors rated up to 1-1/2 hours
• FB41P for wood doors. Pair contains FB41T top bolt and FB41 bottom bolt. Non-handed. Top and bottom bolts not identical. Similar to FB31T design, FB41T top bolt has no spring tension and provides a significant reduced activation force. FB42 is UL/cUL listed for pairs of wood fire doors rated at 20 minutes
• FB42 model consists of an FB41T top bolt and an auxiliary fire latch. This combination greatly reduces door prep and eliminates field problems caused by door warpage or changes in field conditions

FB50 / FB60 Series Constant Latch Flush Bolts

• FB51P and FB61P Series incorporate a constant latching top bolt with automatic bottom bolt. FB51P models are UL/cUL listed for use on pairs of metal fire doors rated up to 3 hours, while FB61P models are UL/cUL listed for use on wood doors with ratings up to 1-1/2 hours
• Bottom bolts identical to FB31P/FB41P models. Top bolts are designed to remain engaged until manually retracted. Inactive door automatically latched when closed
• FB51P for hollow metal doors. Combines FB51T constant latching top bolt with FB31B automatic bottom bolt. Non-handed. FB52 combination includes FB51T top bolt and auxiliary fire latch, reducing door prep and eliminating floor prep
• FB52 is UL/cUL listed for pairs of metal fire doors rated up to 3 hours
• FB53 used to update existing flush bolt installations with auxiliary fire latch eliminating bottom bolt and floor strike. FB53 consists of FB51T top bolt, auxiliary fire latch, and filler plate to cover existing cutout when bottom bolt is removed
• FB61P is UL/cUL listed for pairs of wood fire doors rated up to 1-1/2 hours
• FB61P for wood doors. Combines FB61T constant latching top bolt with FB41B bottom bolt. FB62 combination includes FB61T top bolt with auxiliary fire latch. Non-handed. Significantly reduces door prep
• FB62 is UL/cUL listed for pairs of wood fire doors rated at 20 minutes

Dust Proof Strikes

• DP1 and DP2 are designed for use with the bottom bolt of all Ives Flush Bolts. Spring-loaded plunger returns to floor or threshold level anytime flush bolt is retracted, eliminating need to clean standard floor strikes
• DP3 and DP4 strikes can be locked in the up position by rotating plunger with screw driver or coin