diff --git a/src/NzbDrone.Api/Config/IndexerConfigModule.cs b/src/NzbDrone.Api/Config/IndexerConfigModule.cs
index 73c2442b8..db5299944 100644
--- a/src/NzbDrone.Api/Config/IndexerConfigModule.cs
+++ b/src/NzbDrone.Api/Config/IndexerConfigModule.cs
@@ -1,4 +1,4 @@
-using FluentValidation;
+using FluentValidation;
 using NzbDrone.Api.Validation;
 using NzbDrone.Core.Configuration;
 
@@ -13,6 +13,9 @@ public IndexerConfigModule(IConfigService configService)
             SharedValidator.RuleFor(c => c.MinimumAge)
                            .GreaterThanOrEqualTo(0);
 
+            SharedValidator.RuleFor(c => c.MaximumSize)
+                           .GreaterThanOrEqualTo(0);
+
             SharedValidator.RuleFor(c => c.Retention)
                            .GreaterThanOrEqualTo(0);
 
@@ -25,4 +28,4 @@ protected override IndexerConfigResource ToResource(IConfigService model)
             return IndexerConfigResourceMapper.ToResource(model);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/NzbDrone.Api/Config/IndexerConfigResource.cs b/src/NzbDrone.Api/Config/IndexerConfigResource.cs
index 884e2e839..bdcfbfd9c 100644
--- a/src/NzbDrone.Api/Config/IndexerConfigResource.cs
+++ b/src/NzbDrone.Api/Config/IndexerConfigResource.cs
@@ -1,4 +1,4 @@
-using NzbDrone.Api.REST;
+using NzbDrone.Api.REST;
 using NzbDrone.Core.Configuration;
 using NzbDrone.Core.Parser;
 
@@ -7,6 +7,7 @@ namespace NzbDrone.Api.Config
     public class IndexerConfigResource : RestResource
     {
         public int MinimumAge { get; set; }
+        public int MaximumSize { get; set; }
         public int Retention { get; set; }
         public int RssSyncInterval { get; set; }
         public bool PreferIndexerFlags { get; set; }
@@ -23,6 +24,7 @@ public static IndexerConfigResource ToResource(IConfigService model)
             return new IndexerConfigResource
             {
                 MinimumAge = model.MinimumAge,
+                MaximumSize = model.MaximumSize,
                 Retention = model.Retention,
                 RssSyncInterval = model.RssSyncInterval,
                 PreferIndexerFlags = model.PreferIndexerFlags,
diff --git a/src/NzbDrone.Core.Test/DecisionEngineTests/MaximumSizeSpecificationFixture.cs b/src/NzbDrone.Core.Test/DecisionEngineTests/MaximumSizeSpecificationFixture.cs
new file mode 100644
index 000000000..85dc33f92
--- /dev/null
+++ b/src/NzbDrone.Core.Test/DecisionEngineTests/MaximumSizeSpecificationFixture.cs
@@ -0,0 +1,75 @@
+using FluentAssertions;
+using NUnit.Framework;
+using NzbDrone.Core.Configuration;
+using NzbDrone.Core.DecisionEngine.Specifications;
+using NzbDrone.Core.Parser.Model;
+using NzbDrone.Core.Test.Framework;
+
+namespace NzbDrone.Core.Test.DecisionEngineTests
+{
+    public class MaximumSizeSpecificationFixture : CoreTest<MaximumSizeSpecification>
+    {
+        private RemoteMovie _remoteMovie;
+
+        [SetUp]
+        public void Setup()
+        {
+            _remoteMovie = new RemoteMovie { Release = new ReleaseInfo() };
+        }
+
+        private void WithMaximumSize(int size)
+        {
+            Mocker.GetMock<IConfigService>().SetupGet(c => c.MaximumSize).Returns(size);
+        }
+
+        private void WithSize(int size)
+        {
+            _remoteMovie.Release.Size = size * 1024 * 1024;
+        }
+
+        [Test]
+        public void should_return_true_when_maximum_size_is_set_to_zero()
+        {
+            WithMaximumSize(0);
+            WithSize(1000);
+
+            Subject.IsSatisfiedBy(_remoteMovie, null).Accepted.Should().BeTrue();
+        }
+
+        [Test]
+        public void should_return_true_when_size_is_smaller_than_maximum_size()
+        {
+            WithMaximumSize(2000);
+            WithSize(1999);
+
+            Subject.IsSatisfiedBy(_remoteMovie, null).Accepted.Should().BeTrue();
+        }
+
+        [Test]
+        public void should_return_true_when_size_is_equals_to_maximum_size()
+        {
+            WithMaximumSize(2000);
+            WithSize(2000);
+
+            Subject.IsSatisfiedBy(_remoteMovie, null).Accepted.Should().BeTrue();
+        }
+
+        [Test]
+        public void should_return_false_when_size_is_bigger_than_maximum_size()
+        {
+            WithMaximumSize(2000);
+            WithSize(2001);
+
+            Subject.IsSatisfiedBy(_remoteMovie, null).Accepted.Should().BeFalse();
+        }
+
+        [Test]
+        public void should_return_true_when_size_is_zero()
+        {
+            WithMaximumSize(2000);
+            WithSize(0);
+
+            Subject.IsSatisfiedBy(_remoteMovie, null).Accepted.Should().BeTrue();
+        }
+    }
+}
diff --git a/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj b/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
index fdf73fc16..7f815a3d9 100644
--- a/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
+++ b/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
@@ -138,6 +138,7 @@
     <Compile Include="Datastore\ReflectionStrategyFixture\Benchmarks.cs" />
     <Compile Include="Datastore\SqliteSchemaDumperTests\SqliteSchemaDumperFixture.cs" />
     <Compile Include="DecisionEngineTests\AcceptableSizeSpecificationFixture.cs" />
+    <Compile Include="DecisionEngineTests\MaximumSizeSpecificationFixture.cs" />
     <Compile Include="DecisionEngineTests\ProtocolSpecificationFixture.cs" />
     <Compile Include="DecisionEngineTests\CutoffSpecificationFixture.cs" />
     <Compile Include="DecisionEngineTests\DownloadDecisionMakerFixture.cs" />
diff --git a/src/NzbDrone.Core/Configuration/ConfigService.cs b/src/NzbDrone.Core/Configuration/ConfigService.cs
index 06344c73f..9b1ca4820 100644
--- a/src/NzbDrone.Core/Configuration/ConfigService.cs
+++ b/src/NzbDrone.Core/Configuration/ConfigService.cs
@@ -106,11 +106,11 @@ public int RssSyncInterval
             set { SetValue("RssSyncInterval", value); }
         }
 
-		public int AvailabilityDelay
-		{
-		    get { return GetValueInt("AvailabilityDelay",0); }
-		    set { SetValue("AvailabilityDelay", value); }
-		}
+        public int AvailabilityDelay
+        {
+            get { return GetValueInt("AvailabilityDelay", 0); }
+            set { SetValue("AvailabilityDelay", value); }
+        }
 
         public int NetImportSyncInterval
         {
@@ -118,57 +118,64 @@ public int NetImportSyncInterval
 
             set { SetValue("NetImportSyncInterval", value); }
         }
-        
+
         public string TraktAuthToken
-	      {
+        {
             get { return GetValue("TraktAuthToken", string.Empty); }
 
             set { SetValue("TraktAuthToken", value); }
-	      }
+        }
 
-	      public string TraktRefreshToken
-	      {
-	          get { return GetValue("TraktRefreshToken", string.Empty); }
-        
-	          set {SetValue("TraktRefreshToken", value); }
-	      }
-        
-	      public int TraktTokenExpiry
-	      {
-	      	  get { return GetValueInt("TraktTokenExpiry", 0); }
-        
-	          set { SetValue("TraktTokenExpiry", value); }
-	      }
+        public string TraktRefreshToken
+        {
+            get { return GetValue("TraktRefreshToken", string.Empty); }
 
-	public string NewTraktAuthToken
-	{
-		get {return GetValue("NewTraktAuthToken", string.Empty); }
-		set { SetValue("NewTraktAuthToken", value); }
-	}
+            set { SetValue("TraktRefreshToken", value); }
+        }
 
-	public string NewTraktRefreshToken
-	{
-		get {return GetValue("NewTraktRefreshToken", string.Empty); }
-		set { SetValue("NewTraktRefreshToken", value); }
-	}
+        public int TraktTokenExpiry
+        {
+            get { return GetValueInt("TraktTokenExpiry", 0); }
 
-	public int NewTraktTokenExpiry
-	{
-		get {return GetValueInt("NewTraktTokenExpiry", 0); }
-		set { SetValue("NewTraktTokenExpiry", value); }
-	}
+            set { SetValue("TraktTokenExpiry", value); }
+        }
 
-	public string ListSyncLevel
-	{
-	    get { return GetValue("ListSyncLevel", "disabled"); }
-	    set { SetValue("ListSyncLevel", value); }
-	}
+        public string NewTraktAuthToken
+        {
+            get { return GetValue("NewTraktAuthToken", string.Empty); }
+            set { SetValue("NewTraktAuthToken", value); }
+        }
 
-	public string ImportExclusions
-	{
-	    get { return GetValue("ImportExclusions", string.Empty); }
-	    set { SetValue("ImportExclusions", value); }
-	}
+        public string NewTraktRefreshToken
+        {
+            get { return GetValue("NewTraktRefreshToken", string.Empty); }
+            set { SetValue("NewTraktRefreshToken", value); }
+        }
+
+        public int NewTraktTokenExpiry
+        {
+            get { return GetValueInt("NewTraktTokenExpiry", 0); }
+            set { SetValue("NewTraktTokenExpiry", value); }
+        }
+
+        public string ListSyncLevel
+        {
+            get { return GetValue("ListSyncLevel", "disabled"); }
+            set { SetValue("ListSyncLevel", value); }
+        }
+
+        public string ImportExclusions
+        {
+            get { return GetValue("ImportExclusions", string.Empty); }
+            set { SetValue("ImportExclusions", value); }
+        }
+
+        public int MaximumSize
+        {
+            get { return GetValueInt("MaximumSize", 0); }
+
+            set { SetValue("MaximumSize", value); }
+        }
 
         public int MinimumAge
         {
@@ -195,22 +202,22 @@ public bool PreferIndexerFlags
         {
             get { return GetValueBoolean("PreferIndexerFlags", false); }
 
-            set {SetValue("PreferIndexerFlags", value);}
+            set { SetValue("PreferIndexerFlags", value); }
         }
 
-		public bool AllowHardcodedSubs
-		{
-			get { return GetValueBoolean("AllowHardcodedSubs", false); }
+        public bool AllowHardcodedSubs
+        {
+            get { return GetValueBoolean("AllowHardcodedSubs", false); }
 
-			set { SetValue("AllowHardcodedSubs", value); }
-		}
+            set { SetValue("AllowHardcodedSubs", value); }
+        }
 
-		public string WhitelistedHardcodedSubs
-		{
-			get { return GetValue("WhitelistedHardcodedSubs", ""); }
+        public string WhitelistedHardcodedSubs
+        {
+            get { return GetValue("WhitelistedHardcodedSubs", ""); }
 
-			set { SetValue("WhitelistedHardcodedSubs", value); }
-		}
+            set { SetValue("WhitelistedHardcodedSubs", value); }
+        }
 
         public ParsingLeniencyType ParsingLeniency
         {
diff --git a/src/NzbDrone.Core/Configuration/IConfigService.cs b/src/NzbDrone.Core/Configuration/IConfigService.cs
index 3e0b67e56..790a1a56a 100644
--- a/src/NzbDrone.Core/Configuration/IConfigService.cs
+++ b/src/NzbDrone.Core/Configuration/IConfigService.cs
@@ -48,6 +48,7 @@ public interface IConfigService
         //Indexers
         int Retention { get; set; }
         int RssSyncInterval { get; set; }
+        int MaximumSize { get; set; }
         int MinimumAge { get; set; }
 
         bool PreferIndexerFlags { get; set; }
diff --git a/src/NzbDrone.Core/DecisionEngine/Specifications/MaximumSizeSpecification.cs b/src/NzbDrone.Core/DecisionEngine/Specifications/MaximumSizeSpecification.cs
new file mode 100644
index 000000000..602bece64
--- /dev/null
+++ b/src/NzbDrone.Core/DecisionEngine/Specifications/MaximumSizeSpecification.cs
@@ -0,0 +1,52 @@
+using NLog;
+using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Configuration;
+using NzbDrone.Core.IndexerSearch.Definitions;
+using NzbDrone.Core.Parser.Model;
+
+namespace NzbDrone.Core.DecisionEngine.Specifications
+{
+    public class MaximumSizeSpecification : IDecisionEngineSpecification
+    {
+        private readonly IConfigService _configService;
+        private readonly Logger _logger;
+
+        public MaximumSizeSpecification(IConfigService configService, Logger logger)
+        {
+            _configService = configService;
+            _logger = logger;
+        }
+
+        public RejectionType Type => RejectionType.Permanent;
+
+        public Decision IsSatisfiedBy(RemoteMovie subject, SearchCriteriaBase searchCriteria)
+        {
+            var size = subject.Release.Size;
+            var maximumSize = _configService.MaximumSize.Megabytes();
+
+            if (maximumSize == 0)
+            {
+                _logger.Debug("Maximum size is not set.");
+                return Decision.Accept();
+            }
+
+            if (size == 0)
+            {
+                _logger.Debug("Release has unknown size, skipping size check.");
+                return Decision.Accept();
+            }
+
+            _logger.Debug("Checking if release meets maximum size requirements. {0}", size.SizeSuffix());
+
+            if (size > maximumSize)
+            {
+                var message = $"{size.SizeSuffix()} is too big, maximum size is {maximumSize.SizeSuffix()}";
+
+                _logger.Debug(message);
+                return Decision.Reject(message);
+            }
+
+            return Decision.Accept();
+        }
+    }
+}
diff --git a/src/NzbDrone.Core/NzbDrone.Core.csproj b/src/NzbDrone.Core/NzbDrone.Core.csproj
index 6ae70e38b..9a851d1a2 100644
--- a/src/NzbDrone.Core/NzbDrone.Core.csproj
+++ b/src/NzbDrone.Core/NzbDrone.Core.csproj
@@ -128,6 +128,7 @@
     <Compile Include="Datastore\Migration\142_movie_extras.cs" />
     <Compile Include="Datastore\Migration\140_add_alternative_titles_table.cs" />
     <Compile Include="Datastore\Migration\141_fix_duplicate_alt_titles.cs" />
+    <Compile Include="DecisionEngine\Specifications\MaximumSizeSpecification.cs" />
     <Compile Include="DecisionEngine\Specifications\RequiredIndexerFlagsSpecification.cs" />
     <Compile Include="Housekeeping\Housekeepers\CleanupOrphanedAlternativeTitles.cs" />
     <Compile Include="MediaFiles\MovieImport\Specifications\GrabbedReleaseQualitySpecification.cs" />
diff --git a/src/UI/Settings/Indexers/Options/IndexerOptionsViewTemplate.hbs b/src/UI/Settings/Indexers/Options/IndexerOptionsViewTemplate.hbs
index b43975d1a..0bfbd4a0b 100644
--- a/src/UI/Settings/Indexers/Options/IndexerOptionsViewTemplate.hbs
+++ b/src/UI/Settings/Indexers/Options/IndexerOptionsViewTemplate.hbs
@@ -25,6 +25,18 @@
         </div>
     </div>
 
+    <div class="form-group advanced-setting">
+        <label class="col-sm-3 control-label">Maximum Size</label>
+
+        <div class="col-sm-1 col-sm-push-2 help-inline">
+            <i class="icon-sonarr-form-info" title="Maximum size for a release to be grabbed in MB. Set to zero to set to unlimited"/>
+        </div>
+
+        <div class="col-sm-2 col-sm-pull-1">
+            <input type="number" min="0" name="maximumSize" class="form-control"/>
+        </div>
+    </div>
+
     <div class="form-group">
         <label class="col-sm-3 control-label">Prefer Special Indexer Flags</label>
         <div class="col-sm-1 col-sm-push-2 help-inline">