Specification AudioSensitivity : 38 decibels Brand : CountryArtHouse BulletPoint1 : 13x13 Photo Mat With Bevel Cut Square Opening for 9x9 Photos BulletPoint2 : Charcoal Acid-Free Photo Mat BulletPoint3 : Includes 25 Matboard Show Kits With Acid Free Backings & Clear Bags BulletPoint4 : microphone, Cardioid pickup BulletPoint5 : Professional shockproof base, effective shockproof. Color : Charcoal CompatibleDevices : Smartphone ConnectorType : 3.5 mm Jack ExternallyAssignedProductIdentifier : 4861138150434 FrequencyResponse : 15 KHz HardwarePlatform : Smartphone IncludedComponents : Battery ItemName : CountryArtHouse Charcoal Acid Free 13x13 Square Picture Frame Mat with White Core Bevel Cut for 9x9 Pictures - Fits 13x13 Frame - Pack of 25 Matboard Show Kits with Acid Free Backings & Clear Bags ItemPackageDimensions_Height : 4 inches ItemPackageDimensions_Length : 2 inches ItemPackageDimensions_Width : 3 inches ItemPackageQuantity : 25 ItemShape : Square ItemTypeKeyword : photo-mat-boards Manufacturer : CountryArtHouse Material : Photo Mat Board MaximumWeightRecommendation : 154 grams MicrophoneFormFactor : Mini ModelName : 500350626 ModelNumber : 500350626 NumberOfItems : 1 PartNumber : Mat_B161_13x13-8.5x8.5_Square_(25)-SETS PolarPattern : Unidirectional PowerSourceType : Battery Powered ProductDescription : Our acid-free Charcoal matboards are 4-ply and feature a white core. With an overall size of 13x13, these mats with Square openings fit perfectly into 13x13 frames and are bevel cut to showcase your 9x9 photos. Actual mat opening size is 8.5x8.5 inches so that it may safely and securely house your 9x9 photo, artwork, needlepoint, sign, etc. This pack includes 25 Matboard Show Kits With Acid Free Backings & Clear Bags. Proudly made in the USA by Country Art House! ProductSiteLaunchDate : 2023-01-20T17:20:46.928Z Size : 25 Matboards With Acid Free Backings & Clear Bags SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 WarrantyDescription : 12 months