Photo 1 of NobleRealm® Sleeper Sofa Bed Support Board (48''x48'' - Full Size) Under Mattress for Sofa Bed– Sleeper Sofa Bed Board for Pullout Couch Sofa Bed, Sagging Mattress Support Board Sleeper Sofa Shield 48 X 48(Full Size)

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Photo 1 of NobleRealm® Sleeper Sofa Bed Support Board (48''x48'' - Full Size) Under Mattress for Sofa Bed– Sleeper Sofa Bed Board for Pullout Couch Sofa Bed, Sagging Mattress Support Board Sleeper Sofa Shield 48 X 48(Full Size)Photo 2 of NobleRealm® Sleeper Sofa Bed Support Board (48''x48'' - Full Size) Under Mattress for Sofa Bed– Sleeper Sofa Bed Board for Pullout Couch Sofa Bed, Sagging Mattress Support Board Sleeper Sofa Shield 48 X 48(Full Size)